NCBI Taxonomy: 1080010

Azelaic acid

C9H16O4 (188.1049)

Nonanedioic acid is an alpha,omega-dicarboxylic acid that is heptane substituted at positions 1 and 7 by carboxy groups. It has a role as an antibacterial agent, an antineoplastic agent, a dermatologic drug and a plant metabolite. It is a dicarboxylic fatty acid and an alpha,omega-dicarboxylic acid. It is a conjugate acid of an azelaate(2-) and an azelaate. Azelaic acid is a saturated dicarboxylic acid found naturally in wheat, rye, and barley. It is also produced by Malassezia furfur, also known as Pityrosporum ovale, which is a species of fungus that is normally found on human skin. Azelaic acid is effective against a number of skin conditions, such as mild to moderate acne, when applied topically in a cream formulation of 20\\\\\%. It works in part by stopping the growth of skin bacteria that cause acne, and by keeping skin pores clear. Azelaic acids antimicrobial action may be attributable to inhibition of microbial cellular protein synthesis. Azelaic acid is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). The physiologic effect of azelaic acid is by means of Decreased Protein Synthesis, and Decreased Sebaceous Gland Activity. Azelaic Acid is a naturally occurring dicarboxylic acid produced by Malassezia furfur and found in whole grain cereals, rye, barley and animal products. Azelaic acid possesses antibacterial, keratolytic, comedolytic, and anti-oxidant activity. Azelaic acid is bactericidal against Proprionibacterium acnes and Staphylococcus epidermidis due to its inhibitory effect on the synthesis of microbial cellular proteins. Azelaic acid exerts its keratolytic and comedolytic effects by reducing the thickness of the stratum corneum and decreasing the number of keratohyalin granules by reducing the amount and distribution of filaggrin in epidermal layers. Azelaic acid also possesses a direct anti-inflammatory effect due to its scavenger activity of free oxygen radical. This drug is used topically to reduce inflammation associated with acne and rosacea. Azelaic acid is a saturated dicarboxylic acid found naturally in wheat, rye, and barley. It is a natural substance that is produced by Malassezia furfur (also known as Pityrosporum ovale), a yeast that lives on normal skin. It is effective against a number of skin conditions, such as mild to moderate acne, when applied topically in a cream formulation of 20\\\\\%. It works in part by stopping the growth of skin bacteria that cause acne, and by keeping skin pores clear. Azelaic acids antimicrobial action may be attributable to inhibition of microbial cellular protein synthesis. See also: Azelaic acid; niacinamide (component of) ... View More ... Azelaic acid (AZA) is a naturally occurring saturated nine-carbon dicarboxylic acid (COOH (CH2)7-COOH). It possesses a variety of biological actions both in vitro and in vivo. Interest in the biological activity of AZA arose originally out of studies of skin surface lipids and the pathogenesis of hypochromia in pityriasis versicolor infection. Later, it was shown that Pityrosporum can oxidize unsaturated fatty acids to C8-C12 dicarboxylic acids that are cornpetitive inhibitors of tyrosinase in vitro. Azelaic acid was chosen for further investigation and development of a new topical drug for treating hyperpigmentary disorders for the following reasons: it possesses a middle-range of antityrosinase activity, is inexpensive, and more soluble to be incorporated into a base cream than other dicarboxylic acids. Azelaic acid is another option for the topical treatment of mild to moderate inflammatory acne vulgaris. It offers effectiveness similar to that of other agents without the systemic side effects of oral antibiotics or the allergic sensitization of topical benzoyl peroxide and with less irritation than tretinoin. Azelaic acid is less expensive than certain other prescription acne preparations, but it is much more expensive than nonprescription benzoyl peroxide preparations. Whether it is safe and effective when used in combination with other agents is not known. (PMID: 7737781, 8961845). An alpha,omega-dicarboxylic acid that is heptane substituted at positions 1 and 7 by carboxy groups. Plants biology In plants, azelaic acid serves as a "distress flare" involved in defense responses after infection.[7] It serves as a signal that induces the accumulation of salicylic acid, an important component of a plant's defensive response.[8] Human biology The mechanism of action in humans is thought to be through the inhibition of hyperactive protease activity that converts cathelicidin into the antimicrobial skin peptide LL-37.[9] Polymers and related materials Esters of this dicarboxylic acid find applications in lubrication and plasticizers. In lubricant industries it is used as a thickening agent in lithium complex grease. With hexamethylenediamine, azelaic acid forms Nylon-6,9, which finds specialized uses as a plastic.[4] Medical Azelaic acid is used to treat mild to moderate acne, both comedonal acne and inflammatory acne.[10][11] It belongs to a class of medication called dicarboxylic acids. It works by killing acne bacteria that infect skin pores. It also decreases the production of keratin, which is a natural substance that promotes the growth[clarification needed] of acne bacteria.[12] Azelaic acid is also used as a topical gel treatment for rosacea, due to its ability to reduce inflammation.[11] It clears the bumps and swelling caused by rosacea. In topical pharmaceutical preparations and scientific research AzA is typically used in concentrations between 15\\\% and 20\\\% but some research demonstrates that in certain vehicle formulations the pharmaceutical effects of 10\\\% Azelaic acid has the potential to be fully comparable to that of some 20\\\% creams.[13] Acne treatment Azelaic acid is effective for mild to moderate acne when applied topically at a 15\\\%-20\\\% concentration.[14][15][16][17] In patients with moderate acne, twice daily application over 3 months of 20\\\% AzA significantly reduced the number of comedones, papules, and pustules;[18][19] at this strength, it’s considered to be as effective as benzoyl peroxide 5\\\%, tretinoin 0.05\\\%, erythromycin 2\\\%, and oral tetracycline at 500 mg-1000 mg.[20][21] In a comparative review of effects of topical AzA, Salicylic acid, Nicotinamide, Sulfur, Zinc, and alpha-hydroxy acid, AzA had more high-quality evidence of effectiveness than the rest.[22] Results can be expected after 4 weeks of twice-daily treatment. The effectiveness of long term use is unclear, but it’s been recommended that AzA be used for at least 6 months continuously for maintenance.[20] Whitening agent Azelaic acid is used for treatment of skin pigmentation, including melasma and postinflammatory hyperpigmentation, particularly in those with darker skin types. It has been recommended as an alternative to hydroquinone.[23] As a tyrosinase inhibitor,[5] azelaic acid reduces synthesis of melanin.[24] According to one report in 1988, azelaic acid in combination with zinc sulfate in vitro was found to be a potent (90\\\% inhibition) 5α-reductase inhibitor, similar to the hair loss drugs finasteride and dutasteride.[25] In vitro research during mid-1980s evaluating azelaic acid's depigmenting (whitening) capability concluded it is effective (cytotoxic to melanocytes) at only high concentrations.[26] A 1996 review claimed 20\\\% AzA is as potent as 4\\\% hydroquinone after a period of application of three months without the latter's adverse effects and even more effective if applied along with tretinoin for the same period of time.[27][19] Azelaic acid is a nine-carbon dicarboxylic acid. Azelaic acid has antimicrobial activity against Propionibacterium acnes and Staphylococcus epidermidis through inhibition of microbial cellular prorein synthesis. Azelaic acid has hypopigmentation action resulting from its ability to scavenge free radicals[1][2]. Azelaic acid is a nine-carbon dicarboxylic acid. Azelaic acid has antimicrobial activity against Propionibacterium acnes and Staphylococcus epidermidis through inhibition of microbial cellular prorein synthesis. Azelaic acid has hypopigmentation action resulting from its ability to scavenge free radicals[1][2].

4-Hydroxybenzoic acid

C7H6O3 (138.0317)

4-Hydroxybenzoic acid, also known as p-hydroxybenzoate or 4-carboxyphenol, belongs to the class of organic compounds known as hydroxybenzoic acid derivatives. Hydroxybenzoic acid derivatives are compounds containing a hydroxybenzoic acid (or a derivative), which is a benzene ring bearing a carboxyl and a hydroxyl groups. 4-Hydroxybenzoic acid is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. It is a nutty and phenolic tasting compound. 4-Hydroxybenzoic acid exists in all living species, ranging from bacteria to plants to humans. 4-Hydroxybenzoic acid can be found naturally in coconut. It is one of the main catechins metabolites found in humans after consumption of green tea infusions. It is also found in wine, in vanilla, in A√ßa√≠ oil, obtained from the fruit of the a√ßa√≠ palm (Euterpe oleracea), at relatively high concetrations (892¬±52 mg/kg). It is also found in cloudy olive oil and in the edible mushroom Russula virescens. It has been detected in red huckleberries, rabbiteye blueberries, and corianders and in a lower concentration in olives, red raspberries, and almonds. In humans, 4-hydroxybenzoic acid is involved in ubiquinone biosynthesis. In particular, the enzyme 4-hydroxybenzoate polyprenyltransferase uses a polyprenyl diphosphate and 4-hydroxybenzoate to produce diphosphate and 4-hydroxy-3-polyprenylbenzoate. This enzyme participates in ubiquinone biosynthesis. 4-Hydroxybenzoic acid can be biosynthesized by the enzyme Chorismate lyase. Chorismate lyase is an enzyme that transforms chorismate into 4-hydroxybenzoate and pyruvate. This enzyme catalyses the first step in ubiquinone biosynthesis in Escherichia coli and other Gram-negative bacteria. 4-Hydroxybenzoate is an intermediate in many enzyme-mediated reactions in microbes. For instance, the enzyme 4-hydroxybenzaldehyde dehydrogenase uses 4-hydroxybenzaldehyde, NAD+ and H2O to produce 4-hydroxybenzoate, NADH and H+. This enzyme participates in toluene and xylene degradation in bacteria such as Pseudomonas mendocina. 4-hydroxybenzaldehyde dehydrogenase is also found in carrots. The enzyme 4-hydroxybenzoate 1-hydroxylase transforms 4-hydroxybenzoate, NAD(P)H, 2 H+ and O2 into hydroquinone, NAD(P)+, H2O and CO2. This enzyme participates in 2,4-dichlorobenzoate degradation and is found in Candida parapsilosis. The enzyme 4-hydroxybenzoate 3-monooxygenase transforms 4-hydroxybenzoate, NADPH, H+ and O2 into protocatechuate, NADP+ and H2O. This enzyme participates in benzoate degradation via hydroxylation and 2,4-dichlorobenzoate degradation and is found in Pseudomonas putida and Pseudomonas fluorescens. 4-Hydroxybenzoic acid is a popular antioxidant in part because of its low toxicity. 4-Hydroxybenzoic acid has estrogenic activity both in vitro and in vivo (PMID 9417843). Isolated from many plants, free and combined. Alkyl esters of 4-hydroxybenzoic acid (see below) are used as food and cosmetic preservatives, mainly in their Na salt form, which makes them more water soluble. They are active at low concentrations and more pH-independent than the commonly used Benzoic acid DVN38-Z and 2,4-Hexadienoic acid GMZ10-P. The taste is more detectable than for those preservatives. Effectiveness increases with chain length of the alcohol, but for some microorganisms this reduces cell permeability and thus counteracts the increased efficiency. 4-Hydroxybenzoic acid is found in many foods, some of which are chicory, corn, rye, and black huckleberry. 4-hydroxybenzoic acid is a monohydroxybenzoic acid that is benzoic acid carrying a hydroxy substituent at C-4 of the benzene ring. It has a role as a plant metabolite and an algal metabolite. It is a conjugate acid of a 4-hydroxybenzoate. 4-Hydroxybenzoic acid is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). See also: Vaccinium myrtillus Leaf (part of); Galium aparine whole (part of); Menyanthes trifoliata leaf (part of) ... View More ... A monohydroxybenzoic acid that is benzoic acid carrying a hydroxy substituent at C-4 of the benzene ring. 4-Hydroxybenzoic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=99-96-7 (retrieved 2024-07-01) (CAS RN: 99-96-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). 4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL. 4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.

Homovanillate

C9H10O4 (182.0579)

CONFIDENCE standard compound; INTERNAL_ID 182 COVID info from PDB, Protein Data Bank KEIO_ID H059 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency. Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency.

Campesterol

C28H48O (400.3705)

Campesterol is a phytosterol, meaning it is a steroid derived from plants. As a food additive, phytosterols have cholesterol-lowering properties (reducing cholesterol absorption in intestines), and may act in cancer prevention. Phytosterols naturally occur in small amount in vegetable oils, especially soybean oil. One such phytosterol complex, isolated from vegetable oil, is cholestatin, composed of campesterol, stigmasterol, and brassicasterol, and is marketed as a dietary supplement. Sterols can reduce cholesterol in human subjects by up to 15\\\\\%. The mechanism behind phytosterols and the lowering of cholesterol occurs as follows : the incorporation of cholesterol into micelles in the gastrointestinal tract is inhibited, decreasing the overall amount of cholesterol absorbed. This may in turn help to control body total cholesterol levels, as well as modify HDL, LDL and TAG levels. Many margarines, butters, breakfast cereals and spreads are now enriched with phytosterols and marketed towards people with high cholesterol and a wish to lower it. -- Wikipedia. Campesterol is a member of phytosterols, a 3beta-sterol, a 3beta-hydroxy-Delta(5)-steroid and a C28-steroid. It has a role as a mouse metabolite. It derives from a hydride of a campestane. Campesterol is a natural product found in Haplophyllum bucharicum, Bugula neritina, and other organisms with data available. Campesterol is a steroid derivative that is the simplest sterol, characterized by the hydroxyl group in position C-3 of the steroid skeleton, and saturated bonds throughout the sterol structure, with the exception of the 5-6 double bond in the B ring. Campesterol. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=474-62-4 (retrieved 2024-07-01) (CAS RN: 474-62-4). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Campesterol is a plant sterol with cholesterol lowering and anticarcinogenic effects. Campesterol is a plant sterol with cholesterol lowering and anticarcinogenic effects.

Aloin

C21H22O9 (418.1264)

C78276 - Agent Affecting Digestive System or Metabolism > C29697 - Laxative D005765 - Gastrointestinal Agents > D002400 - Cathartics Aloin A is a C-glycosyl compound that is beta-D-glucopyranose in which the anomeric hydroxy group is replaced by a 4,5-dihydroxy-2-(hydroxymethyl)-10-oxo-9,10-dihydroanthracen-9-yl moiety (the 9S diastereoisomer). It has a role as a metabolite and a laxative. It is a C-glycosyl compound, a member of anthracenes, a cyclic ketone and a member of phenols. Barbaloin is a natural product found in Aloe africana, Aloe castanea, and other organisms with data available. See also: Aloe Vera Leaf (part of); Frangula purshiana Bark (part of). A C-glycosyl compound that is beta-D-glucopyranose in which the anomeric hydroxy group is replaced by a 4,5-dihydroxy-2-(hydroxymethyl)-10-oxo-9,10-dihydroanthracen-9-yl moiety (the 9S diastereoisomer). Aloin B is a C-glycosyl compound that is beta-D-glucopyranose in which the anomeric hydroxy group is replaced by a 4,5-dihydroxy-2-(hydroxymethyl)-10-oxo-9,10-dihydroanthracen-9-yl moiety (the 9R diastereoisomer). It has a role as a metabolite and a laxative. It is a C-glycosyl compound, a member of anthracenes, a cyclic ketone and a member of phenols. Aloin is a natural product found in Aloe africana, Aloe castanea, and other organisms with data available. See also: Aloe Vera Leaf (part of); Frangula purshiana Bark (part of). A C-glycosyl compound that is beta-D-glucopyranose in which the anomeric hydroxy group is replaced by a 4,5-dihydroxy-2-(hydroxymethyl)-10-oxo-9,10-dihydroanthracen-9-yl moiety (the 9R diastereoisomer). IPB_RECORD: 1881; CONFIDENCE confident structure Aloin (Aloin-A; Barbaloin-A) is a natural anti-tumor anthraquinone glycoside with iron chelating activity. Aloin (Aloin-A; Barbaloin-A) is a natural anti-tumor anthraquinone glycoside with iron chelating activity. Aloin B is an isomer of aloin, a physiologically active anthraquinone compound in aloe. Aloin B is an isomer of aloin, a physiologically active anthraquinone compound in aloe. Aloin (mixture of A&B) is anthraquinone derivative isolated from Aloe vera. Aloin (mixture of A&B) has diverse biological activities such as anti-inflammatory, immunity, antidiabetic, antioxidant, antibacterial, antifungal, and antitumor activities. Aloin (mixture of A&B) also an effective inhibitor of stimulated granulocyte matrix metalloproteinases (MMPs)[1][2].

3-Methylbenzaldehyde

C8H8O (120.0575)

3-Methylbenzaldehyde, also known as 3-tolylaldehyde, belongs to the class of organic compounds known as benzoyl derivatives. These are organic compounds containing an acyl moiety of benzoic acid with the formula (C6H5CO-). 3-Methylbenzaldehyde exists in all living organisms, ranging from bacteria to humans. 3-Methylbenzaldehyde is a sweet, benzaldehyde, and cherry tasting compound. 3-Methylbenzaldehyde has been detected, but not quantified, in several different foods, such as sweet cherries, alcoholic beverages, garden tomato, coffee and coffee products, and tea. This could make 3-methylbenzaldehyde a potential biomarker for the consumption of these foods. A tolualdehyde compound with the methyl substituent at the 3-position. M-tolualdehyde is a tolualdehyde compound with the methyl substituent at the 3-position. It has a role as a plant metabolite. 3-Methylbenzaldehyde is a natural product found in Aloe africana, Cichorium endivia, and other organisms with data available. Flavouring ingredient. Component of FEMA 3068; see further under 4-Methylbenzaldehyde BHW21-S. 3-Methylbenzaldehyde is found in many foods, some of which are coffee and coffee products, nuts, tea, and garden tomato. A tolualdehyde compound with the methyl substituent at the 3-position. m-Tolualdehyde (3-Methylbenzaldehyde) is a tolualdehyde compound with the methyl substituent at the 3-position. m-Tolualdehyde can be used as a food additive. m-Tolualdehyde (3-Methylbenzaldehyde) is a tolualdehyde compound with the methyl substituent at the 3-position. m-Tolualdehyde can be used as a food additive.

Isonicotinic acid

C6H5NO2 (123.032)

Isonicotinic acid is a pyridinemonocarboxylic acid in which the carboxy group is at position 4 of the pyridine ring. It has a role as a human metabolite and an algal metabolite. It is a conjugate acid of an isonicotinate. Isonicotinic acid is a natural product found in Aloe africana, Chlamydomonas reinhardtii, and other organisms with data available. Heterocyclic acids that are derivatives of 4-pyridinecarboxylic acid (isonicotinic acid). Isonicotinic acid is a metabolite of isoniazid. Isonicotinic acid is an organic compound with a carboxyl group on a pyridine ring. It is an isomer of nicotinic acid. The carboxyl group for isonicotinic acid is on the 4-position instead of the 3-position for nicotinic acid (Wikipedia). A pyridinemonocarboxylic acid in which the carboxy group is at position 4 of the pyridine ring. Acquisition and generation of the data is financially supported in part by CREST/JST. KEIO_ID I017 Isonicotinic acid is a metabolite of Isoniazid. Isoniazid is converted to Isonicotinic acid by hydrazinolysis, with the Isoniazid to Isonicotinic acid biotransformation also to be catalyzed by cytochrome P450 (CYP) enzymes, e.g., CYP2C[1].

3-methylgallic acid

C8H8O5 (184.0372)

3-O-methylgallic acid is a member of the class of benzoic acids that is gallic acid in which the phenolic hydroxy group at position 3 is converted into the corresponding methyl ether. It is a member of catechols and a member of benzoic acids. It is functionally related to a gallic acid. It is a conjugate acid of a 3-O-methylgallate. 3,4-Dihydroxy-5-methoxybenzoic acid is a natural product found in Aloe africana, Macaranga tanarius, and other organisms with data available. 3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2]. 3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2].

Aloesin

C19H22O9 (394.1264)

Aloesin is a member of chromones. Aloesin is a natural product found in Aloe africana, Aloe castanea, and other organisms with data available.

2-Hydroxycinnamic acid

C9H8O3 (164.0473)

2-coumaric acid, also known as o-coumaric acid, is a monohydroxycinnamic acid in which the hydroxy substituent is located at C-2 of the phenyl ring. It has a role as a plant metabolite. It is a conjugate acid of a 2-coumarate. It is a hydroxycinnamic acid, an organic compound that is a hydroxy derivative of cinnamic acid. There are three isomers of coumaric acids: o-coumaric acid, m-coumaric acid, and p-coumaric acid, that differ by the position of the hydroxy substitution of the phenyl group. 2-Hydroxycinnamic acid belongs to the class of organic compounds known as hydroxycinnamic acids. Hydroxycinnamic acids are compounds containing an cinnamic acid where the benzene ring is hydroxylated. 2-Hydroxycinnamic acid exists in all living organisms, ranging from bacteria to humans. 2-Hydroxycinnamic acid has been found in a few different foods, such as corns, hard wheats, and olives and in a lower concentration in pomegranates, american cranberries, and peanuts. 2-Hydroxycinnamic acid has also been detected, but not quantified in several different foods, such as carrots, soy beans, ryes, rye bread, and turmerics. Coumaric acid is a hydroxycinnamic acid, an organic compound that is a hydroxy derivative of cinnamic acid. There are three isomers, o-coumaric acid, m-coumaric acid, and p-coumaric acid, that differ by the position of the hydroxy substitution of the phenyl group. p-Coumaric acid is the most abundant isomer of the three in nature. o-Coumaric acid is found in many foods, some of which are common wheat, date, bilberry, and corn. 2-coumaric acid is a monohydroxycinnamic acid in which the hydroxy substituent is located at C-2 of the phenyl ring. It has a role as a plant metabolite. It is a conjugate acid of a 2-coumarate. 2-Hydroxycinnamic acid is a natural product found in Mikania glomerata, Coffea arabica, and other organisms with data available. See also: Ipomoea aquatica leaf (part of). The trans-isomer of 2-coumaric acid. o-Coumaric acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=583-17-5 (retrieved 2024-07-01) (CAS RN: 583-17-5). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Tiglic acid

C5H8O2 (100.0524)

Tiglic acid is a monocarboxylic unsaturated organic acid. It is found in croton oil and in several other natural products. It has also been isolated from the defensive secretion of certain beetles. Tiglic acid, also known as tiglate or tiglinsaeure, belongs to the class of organic compounds known as methyl-branched fatty acids. These are fatty acids with an acyl chain that has a methyl branch. Usually, they are saturated and contain only one or more methyl group. However, branches other than methyl may be present. Tiglic acid has a double bond between the second and third carbons of the chain. Tiglic acid and angelic acid form a pair of cis-trans isomers. Tiglic acid is a volatile and crystallizable substance with a sweet, warm, spicy odour. It is used in making perfumes and flavoring agents. The salts and esters of tiglic acid are called tiglates. Tiglic acid is a 2-methylbut-2-enoic acid having its double bond in trans-configuration. It has a role as a plant metabolite. It is functionally related to a crotonic acid. Tiglic acid is a natural product found in Aloe africana, Azadirachta indica, and other organisms with data available. See also: Arctium lappa Root (part of); Petasites hybridus root (part of). A branched-chain fatty acid consisting of 2-butenoic acid having a methyl group at position 2. Flavouring ingredient KEIO_ID T016 Tiglic acid is a monocarboxylic unsaturated organic acid found in croton oil and in several other natural products. Tiglic aci has a role as a plant metabolite[1]. Tiglic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=80-59-1 (retrieved 2025-01-17) (CAS RN: 80-59-1). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

2-Pyrocatechuic acid

C7H6O4 (154.0266)

2-Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma (PMID 16351159), and is normally found with increased levels after consumption of many nutrients and drugs, i.e.: cranberry juice (PMID 14733499), aspirin ingestion. (PMID 3342084) It has been found associated with idiopathic oro-facial pain due to stress (oxidative stress might enhance the production of free radicals); it has been suggested that OH radicals are responsible for the production of many systemic and local tissue injury diseases which may initially manifest as pain syndrome, and 2-Pyrocatechuic acid is a biological marker for the detection and quantification of OH radicals, and patients had significantly increased circulating levels of 2-Pyrocatechuic acid after aspirin ingestion than control subjects. (PMID 7748148). D064449 - Sequestering Agents > D002614 - Chelating Agents > D007502 - Iron Chelating Agents Occurs in Gentiana lutea (yellow gentian) Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion. Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion.

Desaminotyrosine

C9H10O3 (166.063)

Desaminotyrosine, also known as 4-hydroxyphenylpropionic acid, is a normal constituent of human urine. It is a product of tyrosine metabolism; its concentration in urine increases in patients with gastrointestinal diseases. Desaminotyrosine is a major phenolic acid breakdown product of proanthocyanidin metabolism (PMID:15315398). Urinary desaminotyrosine is produced by Clostridium sporogenes and C. botulinum (PMID:29168502). Desaminotyrosine is also found in Acinetobacter, Bacteroides, Bifidobacteria, Bifidobacterium, Clostridium, Enterococcus, Escherichia, Eubacterium, Klebsiella, Lactobacillus, Pseudomonas, and Staphylococcus (PMID:29168502, 28393285, 19961416). Desaminotyrosine is a phenolic acid metabolite formed by the gut microflora detected after the consumption of whole grain. A normal constituent of human urine. A product of tyrosine metabolism; concentration in urine increases in patients with gastrointestinal diseases. (Dictionary of Organic Compounds) May also result from phenolic acid metabolism by colonic bacteria. (PMID 15315398) [HMDB]. Phloretic acid is found in many foods, some of which are arrowroot, olive, avocado, and peanut. Desaminotyrosine is a microbially associated metabolite protecting from influenza through augmentation of type I interferon signaling. Desaminotyrosine is a microbially associated metabolite protecting from influenza through augmentation of type I interferon signaling.

3-Hydroxyisovaleric acid

C5H10O3 (118.063)

3-Hydroxyisovaleric acid is a normal human metabolite excreted in the urine. It is a byproduct of the leucine degradation pathway. Production of 3-hydroxyisovaleric acid begins with the conversion of 3-methylcrotonyl-CoA into 3-methylglutaconyl-CoA in the mitochondria by the biotin-dependent enzyme methylcrotonyl-CoA carboxylase. Biotin deficiencies, certain lifestyle habits (smoking), or specific genetic conditions can reduce methylcrotonyl-CoA carboxylase activity. This reduction can lead to a buildup of 3-methylcrotonyl-CoA, which is converted into 3-hydroxyisovaleryl-CoA by the enzyme enoyl-CoA hydratase. Increased concentrations of 3-methylcrotonyl-CoA and 3-hydroxyisovaleryl-CoA can lead to a disruption of the esterified CoA:free CoA ratio, and ultimately to mitochondrial toxicity. Detoxification of these metabolic end products occur via the transfer of the 3-hydroxyisovaleryl moiety to carnitine forming 3-hydroxyisovaleric acid-carnitine or 3HIA-carnitine, which is then transferred across the inner mitochondrial membrane where 3-hydroxyisovaleric acid is released as the free acid (PMID: 21918059). 3-Hydroxyisovaleric acid has been found to be elevated in smokers and in subjects undergoing long-term anticonvulsant therapy with carbamazepine and/or phenytoin. These levels are elevated due to impairment of renal reclamation of biotin. Levels may also be increased from prolonged consumption of raw egg-whites (PMID: 16895887, 9523856, 15447901, 9176832) (OMIM: 210210, 253270, 600529, 253260, 246450, 210200, 238331). When present in sufficiently high levels, 3-hydroxyisovaleric acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of 3-hydroxyisovaleric acid are associated with at least a dozen inborn errors of metabolism, including 3-hydroxy-3-methylglutaryl-CoA lyase deficiency, 3-methylglutaconic aciduria type I, biotinidase deficiency and isovaleric aciduria, dihydrolipoamide dehydrogenase deficiency, 3-methylcrotonyl-CoA carboxylase 1 deficiency, 3-hydroxy-3-methylglutaryl-CoA lyase deficiency, late-onset multiple carboxylase deficiency, holocarboxylase synthetase deficiency, and 3-methylcrotonyl-CoA carboxylase 2 deficiency. 3-Hydroxyisovaleric acid is an organic acid. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of the untreated IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. 3-Hydroxyisovaleric acid is a normal human metabolite excreted in the urine. Elevated levels of this compound are found in several inherited disorders such as Dihydrolipoamide dehydrogenase Deficiency, 3-Methylcrotonyl-CoA carboxylase 1 deficiency, 3-Hydroxy-3-methylglutaryl-CoA lyase deficiency (3-hydroxy-3-methylglutaryl -CoA lyase Deficiency, Biotinidase deficiency multiple carboxylase deficiency late-onset , Late onset multiple carboxylase deficiency, HolMcarboxylase synthetase deficiency, 3-Methylcrotonyl-CoA carboxylase 2 deficiency. 3-Hydroxyisovaleric acid is also elevated in smokers, in subjects undergoing long-term anticonvulsant therapy with carbamazepine and/or phenytoin. These levels are elevated due to impairment of renal reclamation of biotin. Levels may also be increased from prolonged consumption of raw egg-whites (PMID: 16895887, 9523856, 15447901, 9176832)(OMIM: 210210, 253270, 600529, 253260, 246450, 210200, 238331) [HMDB] 3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2]. 3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2].

3-Hydroxybutyric acid

C4H8O3 (104.0473)

3-Hydroxybutyric acid (CAS: 300-85-6), also known as beta-hydroxybutanoic acid, is a typical partial-degradation product of branched-chain amino acids (primarily valine) released from muscle for hepatic and renal gluconeogenesis. This acid is metabolized by 3-hydroxybutyrate dehydrogenase (catalyzes the oxidation of 3-hydroxybutyrate to form acetoacetate, using NAD+ as an electron acceptor). The enzyme functions in nervous tissues and muscles, enabling the use of circulating hydroxybutyrate as a fuel. In the liver mitochondrial matrix, the enzyme can also catalyze the reverse reaction, a step in ketogenesis. 3-Hydroxybutyric acid is a chiral compound having two enantiomers, D-3-hydroxybutyric acid and L-3-hydroxybutyric acid, and is a ketone body. Like the other ketone bodies (acetoacetate and acetone), levels of 3-hydroxybutyrate in blood and urine are raised in ketosis. In humans, 3-hydroxybutyrate is synthesized in the liver from acetyl-CoA and can be used as an energy source by the brain when blood glucose is low. Blood levels of 3-hydroxybutyric acid levels may be monitored in diabetic patients to look for diabetic ketoacidosis. Persistent mild hyperketonemia is a common finding in newborns. Ketone bodies serve as an indispensable source of energy for extrahepatic tissues, especially the brain and lung of developing mammals. Another important function of ketone bodies is to provide acetoacetyl-CoA and acetyl-CoA for the synthesis of cholesterol, fatty acids, and complex lipids. During the early postnatal period, acetoacetate (AcAc) and beta-hydroxybutyrate are preferred over glucose as substrates for the synthesis of phospholipids and sphingolipids in accord with requirements for brain growth and myelination. Thus, during the first two weeks of postnatal development, when the accumulation of cholesterol and phospholipids accelerates, the proportion of ketone bodies incorporated into these lipids increases. On the other hand, an increased proportion of ketone bodies is utilized for cerebroside synthesis during the period of active myelination. In the lung, AcAc serves better than glucose as a precursor for the synthesis of lung phospholipids. The synthesized lipids, particularly dipalmitoylphosphatidylcholine, are incorporated into surfactant, and thus have a potential role in supplying adequate surfactant lipids to maintain lung function during the early days of life (PMID: 3884391). 3-Hydroxybutyric acid is found to be associated with fumarase deficiency and medium-chain acyl-CoA dehydrogenase deficiency, which are inborn errors of metabolism. 3-Hydroxybutyric acid is a metabolite of Alcaligenes and can be produced from plastic metabolization or incorporated into polymers, depending on the species (PMID: 7646009, 18615882). (R)-3-Hydroxybutyric acid is a butyric acid substituted with a hydroxyl group in the beta or 3 position. It is involved in the synthesis and degradation of ketone bodies. Like the other ketone bodies (acetoacetate and acetone), levels of beta-hydroxybutyrate are raised in the blood and urine in ketosis. Beta-hydroxybutyrate is a typical partial-degradation product of branched-chain amino acids (primarily valine) released from muscle for hepatic and renal gluconeogenesis This acid is metabolized by 3-hydroxybutyrate dehydrogenase (catalyzes the oxidation of D-3-hydroxybutyrate to form acetoacetate, using NAD+ as an electron acceptor). The enzyme functions in nervous tissues and muscles, enabling the use of circulating hydroxybutyrate as a fuel. In the liver mitochondrial matrix, the enzyme can also catalyze the reverse reaction, a step in ketogenesis. 3-Hydroxybutyric acid is a chiral compound having two enantiomers, D-3-hydroxybutyric acid and L-3-hydroxybutyric acid. In humans, beta-hydroxybutyrate is synthesized in the liver from acetyl-CoA, and can be used as an energy source by the brain when blood glucose is low. It can also be used for the synthesis of biodegradable plastics . [HMDB] Acquisition and generation of the data is financially supported in part by CREST/JST. KEIO_ID H022 (R)-3-Hydroxybutanoic acid is a metabolite, and converted from acetoacetic acid catalyzed by 3-hydroxybutyrate dehydrogenase. (R)-3-Hydroxybutanoic acid has applications as a nutrition source and as a precursor for vitamins, antibiotics and pheromones[1][2]. 3-Hydroxybutyric acid (β-Hydroxybutyric acid) is a metabolite that is elevated in type I diabetes. 3-Hydroxybutyric acid can modulate the properties of membrane lipids[1]. 3-Hydroxybutyric acid (β-Hydroxybutyric acid) is a metabolite that is elevated in type I diabetes. 3-Hydroxybutyric acid can modulate the properties of membrane lipids[1].

3-Hydroxypicolinic acid

C6H5NO3 (139.0269)

3-Hydroxy picolinic acid is a picolinic acid derivative and is a member of the pyridine family. Picolinic acid is an isomer of nicotinic acid, which has the carboxyl side chain at the 3-position. It is a catabolite of the amino acid tryptophan. [HMDB] 3-Hydroxy picolinic acid is a picolinic acid derivative and is a member of the pyridine family. Picolinic acid is an isomer of nicotinic acid, which has the carboxyl side chain at the 3-position. It is a catabolite of the amino acid tryptophan. COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 3-Hydroxypicolinic acid is a picolinic acid derivative, and belongs to the pyridine family.

4-Ethylphenol

C8H10O (122.0732)

4-Ethylphenol belongs to the class of organic compounds known as 1-hydroxy-4-alkyl benzenoids. These are phenols that are substituted by an alkyl group at the para-position. 4-Ethylphenol exists in all living species, ranging from bacteria to humans. 4-Ethylphenol is an alcohol tasting compound. 4-Ethylphenol has been detected, but not quantified, in several different foods, such as arabica coffee, beers, corns, milk (cow), and red raspberries. 4-Ethylphenol is a potentially toxic compound, capable of producing respiratory distress, cardiovascular collapse, shock, ventricular tachycardia, and coma in an adult. Liver, lung, central nervous system and renal injury may also occur. In case of exposure to eyes, irrigate exposed eyes with copious amounts of room temperature water for at least 15 minutes. Monitor for respiratory distress in case of inhalation exposure. Systemic manifestations of toxicity may include nausea, vomiting, diarrhea, dyspnea, tachypnea, pallor, and profuse sweating. 4-Ethylphenol (4-EP) is a phenolic compound produced in wine and beer by the spoilage yeast Brettanomyces. 4-Ethylphenol is found in many foods, some of which are red raspberry, beer, arabica coffee, and corn. 4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine. 4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine.

Picolinic acid

C6H5NO2 (123.032)

Picolinic acid is a metabolite of the tryptophan catabolism. Picolinic acid is produced under inflammatory conditions and a costimulus with interferon-gamma (IFNgamma) of macrophage (Mphi) effector functions, is a selective inducer of the Mphi inflammatory protein-1alpha (MIP-1alpha) and -1beta (MIPs), two chemokines/cytokines involved in the elicitation of the inflammatory reactions and in the development of the Th1 responses. IFNgamma and picolinic acid have reciprocal effects on the production of MIPs chemokines and the expression of their receptor. The concerted action of IFNgamma and picolinic acid on MIP-1alpha/beta chemokine/receptor system is likely to be of pathophysiological significance and to represent an important regulatory mechanism for leukocyte recruitment and distribution into damaged tissues during inflammatory responses. Picolinic acid has an effect on the production of L-arginine-derived reactive nitrogen intermediates in macrophages, by augmenting IFN-gamma-induced NO2- production, and acts synergistically with IFN-gamma in activating macrophages. Children with acrodermatitis enteropathica (AE) are treated with oral zinc dipicolinate (zinc-PA). The concentration of picolinic acid in the plasma of asymptomatic children with AE was significantly less than that of normal children. However, oral treatment with PA alone is ineffective. The results support the hypothesis that the genetic defect in AE is in the tryptophan pathway, although the role of PA in zinc metabolism remains to be defined. (PMID:15206716, 8473748, 1701787, 6694049). Picolinic acid is a metabolite of the tryptophan catabolism. Picolinic acid is produced under inflammatory conditions and a costimulus with interferon-gamma (IFNgamma) of macrophage (Mphi) effector functions, is a selective inducer of the Mphi inflammatory protein-1alpha (MIP-1alpha) and -1beta (MIPs), two chemokines/cytokines involved in the elicitation of the inflammatory reactions and in the development of the Th1 responses. IFNgamma and picolinic acid have reciprocal effects on the production of MIPs chemokines and the expression of their receptor. The concerted action of IFNgamma and picolinic acid on MIP-1alpha/beta chemokine/receptor system is likely to be of pathophysiological significance and to represent an important regulatory mechanism for leukocyte recruitment and distribution into damaged tissues during inflammatory responses. Picolinic acid has an effect on the production of L-arginine-derived reactive nitrogen intermediates in macrophages, by augmenting IFN-gamma-induced NO2- production, and acts synergistically with IFN-gamma in activating macrophages. D064449 - Sequestering Agents > D002614 - Chelating Agents > D007502 - Iron Chelating Agents [Raw Data] CBA16_Picolinic-acid_pos_10eV_1-8_01_816.txt [Raw Data] CBA16_Picolinic-acid_pos_20eV_1-8_01_817.txt KEIO_ID P045 Picolinic acid (PCL 016) is a topical antiviral agent, which inhibits adenovirus replication in rabbits.

Hydrocinnamic acid

C9H10O2 (150.0681)

Hydrocinnamic acid, also known as 3-phenylpropanoic acid or dihydrocinnamic acid, belongs to the class of organic compounds known as phenylpropanoic acids. Phenylpropanoic acids are compounds with a structure containing a benzene ring conjugated to a propanoic acid (C6-C3). Phenylpropanoic acid can be prepared from cinnamic acid by hydrogenation. Hydrocinnamic acid is a sweet, balsamic, and cinnamon tasting compound. This compound is used frequently in cosmetic products such as perfumes, bath gels, detergent powders, liquid detergents, fabric softeners, and soaps as it gives off a floral scent. A characteristic reaction of phenylpropanoic acid is its cyclization to indanones. Phenylpropanoic acid is used in the food industry to preserve and maintain the original aroma quality of frozen foods. Phenylpropanoic acid is also added to food for technological purposes in a wide variety including manufacturing, processing, preparation, treatment, packaging, transportation or storage, and food additives. This compound is used as a sweetener as well to sweeten food and can be found in tabletop sweeteners. Hydrocinnamic acid is an analogue of phenylalanine. It is a substrate of the enzyme oxidoreductases [EC 1.14.12.-] in the pathway phenylalanine metabolism (KEGG). 3-Phenylpropanoic acid is found in many foods, some of which are purple laver, quinoa, custard apple, and conch. KEIO_ID P109 Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities.

Phenylpyruvate

C9H8O3 (164.0473)

Phenylpyruvic acid is a keto-acid that is an intermediate or catabolic byproduct of phenylalanine metabolism. It has a slight honey-like odor. Levels of phenylpyruvate are normally very low in blood or urine. High levels of phenylpyruvic acid can be found in the urine of individuals with phenylketonuria (PKU), an inborn error of metabolism. PKU is due to lack of the enzyme phenylalanine hydroxylase (PAH), so that phenylalanine is converted not to tyrosine but to phenylpyruvic acid. In particular, excessive phenylalanine can be metabolized into phenylketones through, a transaminase pathway route involving glutamate. Metabolites of this transamination reaction include phenylacetate, phenylpyruvate and phenethylamine. In persons with PKU, dietary phenylalanine either accumulates in the body or some of it is converted to phenylpyruvic acid. Individuals with PKU tend to excrete large quantities of phenylpyruvate, phenylacetate and phenyllactate, along with phenylalanine, in their urine. If untreated, mental retardation effects and microcephaly are evident by the first year along with other symptoms which include: unusual irritability, epileptic seizures and skin lesions. Hyperactivity, EEG abnormalities and seizures, and severe learning disabilities are major clinical problems later in life. A "musty or mousy" odor of skin, hair, sweat and urine (due to phenylacetate accumulation); and a tendency to hypopigmentation and eczema are also observed. The neural-development effects of PKU are primarily due to the disruption of neurotransmitter synthesis. In particular, phenylalanine is a large, neutral amino acid which moves across the blood-brain barrier (BBB) via the large neutral amino acid transporter (LNAAT). Excessive phenylalanine in the blood saturates the transporter. Thus, excessive levels of phenylalanine significantly decrease the levels of other LNAAs in the brain. But since these amino acids are required for protein and neurotransmitter synthesis, phenylalanine accumulation disrupts brain development, leading to mental retardation. Phenylpyruvic acid is also a microbial metabolite, it can be produced by Lactobacillus plantarum (PMID: 9687465). Flavouring ingredient Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1]. Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1].

Suberic acid

C8H14O4 (174.0892)

Suberic acid, also octanedioic acid, is a dicarboxylic acid, with formula C6H12(COOH)2. It is present in the urine of patients with fatty acid oxidation disorders (PMID 10404733). A metabolic breakdown product derived from oleic acid. Elevated levels of this unstaruated dicarboxylic acid are found in individuals with medium-chain acyl-CoA dehydrogenase deficiency (MCAD). Suberic acid is also found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency, which are also inborn errors of metabolism. Isolated from the roots of Phaseolus vulgaris (kidney bean) CONFIDENCE standard compound; INTERNAL_ID 153 KEIO_ID S013 Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency. Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency.

4-Methylbenzoic acid

C8H8O2 (136.0524)

4-Methylbenzoic acid is found in brassicas. 4-Methylbenzoic acid is isolated from horseradis KEIO_ID M017 p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc. p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc.

Pyroglutamic acid

C5H7NO3 (129.0426)

Pyroglutamic acid (5-oxoproline) is a cyclized derivative of L-glutamic acid. It is an uncommon amino acid derivative in which the free amino group of glutamic acid cyclizes to form a lactam. It is formed nonenzymatically from glutamate, glutamine, and gamma-glutamylated peptides, but it can also be produced by the action of gamma-glutamylcyclotransferase on an L-amino acid. Elevated blood levels may be associated with problems of glutamine or glutathione metabolism. This compound is found in substantial amounts in brain tissue and other tissues in bound form, especially skin. It is also present in plant tissues. It is sold, over the counter, as a "smart drug" for improving blood circulation in the brain. Pyroglutamate in the urine is a biomarker for the consumption of cheese. When present in sufficiently high levels, pyroglutamic acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of pyroglutamic acid are associated with at least five inborn errors of metabolism including 5-oxoprolinuria, 5-oxoprolinase deficiency, glutathione synthetase deficiency, hawkinsinuria, and propionic acidemia. Pyroglutamic acid is an organic acid. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of the untreated IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. It has been shown that pyroglutamic acid releases GABA from the cerebral cortex and displays anti-anxiety effects in a simple approach-avoidance conflict situation in the rat. In clinical pharmacology experiments, pyroglutamic acid significantly shortens the plasma half-life of ethanol during acute intoxication. Found in vegetables, fruits and molasses. A cyclized derivative of L-glutamic acid. It is an uncommon amino acid derivative in which the free amino group of glutamic acid cyclizes to form a lactam. Pyroglutamate in the urine is a biomarker for the consumption of cheese C78276 - Agent Affecting Digestive System or Metabolism > C29703 - Antilipidemic Agent

2-Furoic acid

C5H4O3 (112.016)

Furoic acid is a metabolite that appears in the urine of workers occupationally exposed to furfural and is a marker of exposure to this compound. Furfural is a heterocyclic aldehyde that is commonly used as a solvent in industry. It is readily absorbed into the body via the lungs and has significant skin absorption. Furfural is an irritant of the eyes, mucous membranes, and skin and is a central nervous system depressant. Furfural as a confirmed animal carcinogen with unknown relevance to humans (It has been suggested that is a substance that produces hepatic cirrhosis). Once in the body, furfural is metabolized rapidly via oxidation to the metabolite furoic acid, which is then conjugated with glycine and excreted in the urine in both free and conjugated forms. (PMID: 3751566, 4630229, 12587683). 2-Furoic acid is a biomarker for the consumption of beer. 2-Furancarboxylic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=88-14-2 (retrieved 2024-07-10) (CAS RN: 88-14-2). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2].

Catechol

C6H6O2 (110.0368)

A benzenediol comprising of a benzene core carrying two hydroxy substituents ortho to each other. Acquisition and generation of the data is financially supported in part by CREST/JST.

Hydroxypropionic acid

C3H6O3 (90.0317)

3-Hydroxypropionic acid is a carboxylic acid. It is an intermediate in the breakdown of branched-chain amino acids and propionic acid from the gut. Typically it originates from propionyl-CoA and a defect in the enzyme propionyl carboxylase. This leads to a buildup in propionyl-CoA in the mitochondria.  Such a buildup can lead to a disruption of the esterified CoA:free CoA ratio and ultimately to mitochondrial toxicity. Detoxification of these metabolic end products occurs via the transfer of the propionyl moiety to carnitine-forming propionyl-carnitine, which is then transferred across the inner mitochondrial membrane. 3-Hydroxypropionic acid is then released as the free acid. As an industrial chemical, it is used in the production of various chemicals such as acrylates in industry. When present in sufficiently high levels, 3-hydroxypropionic acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of hydroxypropionic acid are associated with many inborn errors of metabolism including biotinidase deficiency, malonic aciduria, methylmalonate semialdehyde dehydrogenase deficiency, methylmalonic aciduria, methylmalonic aciduria due to cobalamin-related disorders, and propionic acidemia. Hydroxypropionic acid is an organic acid. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. Infants with acidosis have symptoms that include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of the IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. 3-Hydroxypropionic acid is also a microbial metabolite found in Escherichia, Klebsiella and Saccharomyces (PMID: 26360870).

Citramalate

C5H8O5 (148.0372)

Citramalic acid, also known as 2-Methylmalic acid, is an analog of malic acid. The structure of citramalic acid is similar to the structure of malic acid except it has an extra CH3 group on position 2. It is also classified as a 2-hydroxydicarboxylic acid. Citramalic acid exists in two isomers, L-citramalic acid and D-citramalic acid. The L-isomer is more biologically relevant isomer. Citramalic acid is found in almost all living organisms from microbes to plants to humans although citramalate is primarily produced from bacteria. L-citramalic acid was first isolated from the peel of apples in 1954 (PMID: 13160011). It has also been isolated in wine and other ripening fruit (PMID: 13807713). Citramalic acid can inhibit the production of malic acid. Citramalic acid is also an important microbial metabolite and has been found to be a byproduct of Saccharomyces yeast species, as well as Propionibacterium acnes and Aspergillus niger (PMID: 31827810) (http://drweyrich.weyrich.com/labs/oat.html) (PMID: 7628083). Citramalic acid is a component of the C5-branched dibasic acid metabolism pathway. It can be broken down by the enzyme citramalate lyase, which converts citramalate to acetate and pyruvate. Citramalate synthase is an enzyme found in bacteria that synthesizes citramalic acid from acetyl-CoA, pyruvate and water. Citramalic acid may have a useful role in medical diagnoses. It has been found in the urine of two brothers with autistic features (PMID: 7628083). Citramalic acid can also be used as a urinary marker for gut dysbiosis (PMID: 31669633). Dysbiosis is a disorder of the bacterial flora of the human digestive tract. It is usually diagnosed clinically by direct detection of an abnormal pattern of the intestinal microbiota. Constituent of apple peel. (R)-2-Hydroxy-2-methylbutanedioic acid is found in pomes.

alpha-Ketoisovaleric acid

C5H8O3 (116.0473)

alpha-Ketoisovaleric acid is an abnormal metabolite that arises from the incomplete breakdown of branched-chain amino acids. alpha-Ketoisovaleric acid is a neurotoxin, an acidogen, and a metabotoxin. A neurotoxin causes damage to nerve cells and nerve tissues. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of alpha-ketoisovaleric acid are associated with maple syrup urine disease. MSUD is a metabolic disorder caused by a deficiency of the branched-chain alpha-keto acid dehydrogenase complex (BCKDC), leading to a buildup of the branched-chain amino acids (leucine, isoleucine, and valine) and their toxic by-products (ketoacids) in the blood and urine. The symptoms of MSUD often show in infancy and lead to severe brain damage if untreated. MSUD may also present later depending on the severity of the disease. If left untreated in older individuals, during times of metabolic crisis, symptoms of the condition include uncharacteristically inappropriate, extreme, or erratic behaviour and moods, hallucinations, anorexia, weight loss, anemia, diarrhea, vomiting, dehydration, lethargy, oscillating hypertonia and hypotonia, ataxia, seizures, hypoglycemia, ketoacidosis, opisthotonus, pancreatitis, rapid neurological decline, and coma. In maple syrup urine disease, the brain concentration of branched-chain ketoacids can increase 10- to 20-fold. This leads to a depletion of glutamate and a consequent reduction in the concentration of brain glutamine, aspartate, alanine, and other amino acids. The result is a compromise of energy metabolism because of a failure of the malate-aspartate shuttle and a diminished rate of protein synthesis (PMID: 15930465). alpha-Ketoisovaleric acid is a keto-acid, which is a subclass of organic acids. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of untreated MSUD. Many affected children with organic acidemias experience intellectual disability or delayed development. Flavouring ingredient for use in butter-type flavours. Found in banana, bread, cheeses, asparagus, beer and cocoa KEIO_ID M006 3-Methyl-2-oxobutanoic acid is a precursor of pantothenic acid in Escherichia coli.

Aloin

C21H22O9 (418.1264)

Aloin is a constituent of various Aloe species Aloin extracted from natural sources is a mixture of two diastereomers, termed aloin A (also called barbaloin) and aloin B (or isobarbaloin), which have similar chemical properties. Aloin is an anthraquinone glycoside, meaning that its anthraquinone skeleton has been modified by the addition of a sugar molecule. Anthraquinones are a common family of naturally occurring yellow, orange, and red pigments of which many have cathartic properties, attributes shared by aloin. Aloin is related to aloe emodin, which lacks a sugar group but shares aloins biological properties. Aloin, also known as Barbaloin [Reynolds, Aloes - The genus Aloe, 2004], is a bitter, yellow-brown colored compound noted in the exudate of at least 68 Aloe species at levels from 0.1 to 6.6\\\\\% of leaf dry weight (making between 3\\\\\% and 35\\\\\% of the toal exudate) (Groom & Reynolds, 1987), and in another 17 species at indeterminate levels [Reynolds, 1995b]. It is used as a stimulant-laxative, treating constipation by inducing bowel movements. The compound is present in what is commonly referred to as the aloe latex that exudes from cells adjacent to the vascular bundles, found under the rind of the leaf and in between it and the gel. When dried, it has been used as a bittering agent in commerce (alcoholic beverages) [21 CFR 172.510. Scientific names given include Aloe perryi, A. barbadensis (= A. vera), A. ferox, and hybrids of A. ferox with A. africana and A. spicata.]. Aloe is listed in federal regulations as a natural substance that may be safely used in food when used in the minimum quantity required to produce their intended physical or technical effect and in accordance with all the principles of good manufacturing practice. This food application is generally limited to use in quite small quantities as a flavoring in alcoholic beverages and may usually be identified only as a natural flavor. ; In May 2002, the U.S. Aloin is a food and Drug Administration (FDA) issued a ruling that aloe laxatives are no longer generally recognized as safe (GRAS) and effective, meaning that aloin-containing products are no longer available in over-the-counter drug products in the United States. Aloe vera leaf latex is a concentrate of an herb or other botanical, and so meets the statutory description of an ingredient that may be used in dietary supplements Aloin A is a natural product found in Aloe arborescens with data available. D005765 - Gastrointestinal Agents > D002400 - Cathartics Constituent of various Aloe subspecies CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 1 INTERNAL_ID 1; CONFIDENCE Reference Standard (Level 1) Aloin (Aloin-A; Barbaloin-A) is a natural anti-tumor anthraquinone glycoside with iron chelating activity. Aloin (Aloin-A; Barbaloin-A) is a natural anti-tumor anthraquinone glycoside with iron chelating activity. Aloin (mixture of A&B) is anthraquinone derivative isolated from Aloe vera. Aloin (mixture of A&B) has diverse biological activities such as anti-inflammatory, immunity, antidiabetic, antioxidant, antibacterial, antifungal, and antitumor activities. Aloin (mixture of A&B) also an effective inhibitor of stimulated granulocyte matrix metalloproteinases (MMPs)[1][2].

2-Hydroxybutyric acid

C4H8O3 (104.0473)

2-Hydroxybutyric acid (CAS: 600-15-7), also known as alpha-hydroxybutyrate, is an organic acid derived from alpha-ketobutyrate. alpha-Ketobutyrate is produced by amino acid catabolism (threonine and methionine) and glutathione anabolism (cysteine formation pathway) and is metabolized into propionyl-CoA and carbon dioxide (PMID: 20526369). 2-Hydroxybutyric acid is formed as a byproduct from the formation of alpha-ketobutyrate via a reaction catalyzed by lactate dehydrogenase (LDH) or alpha-hydroxybutyrate dehydrogenase (alphaHBDH). alpha-Hydroxybutyric acid is primarily produced in mammalian hepatic tissues that catabolize L-threonine or synthesize glutathione. Oxidative stress or detoxification of xenobiotics in the liver can dramatically increase the rate of hepatic glutathione synthesis. Under such metabolic stress conditions, supplies of L-cysteine for glutathione synthesis become limiting, so homocysteine is diverted from the transmethylation pathway (which forms methionine) into the transsulfuration pathway (which forms cystathionine). alpha-Ketobutyrate is released as a byproduct when cystathionine is cleaved into cysteine that is incorporated into glutathione. Chronic shifts in the rate of glutathione synthesis may be reflected by urinary excretion of 2-hydroxybutyrate. 2-Hydroxybutyrate is an early marker for both insulin resistance and impaired glucose regulation that appears to arise due to increased lipid oxidation and oxidative stress (PMID: 20526369). 2-Hydroxybutyric acid is often found in the urine of patients suffering from lactic acidosis and ketoacidosis. 2-Hydroxybutyric acid generally appears at high concentrations in situations related to deficient energy metabolism (e.g. birth asphyxia) and also in inherited metabolic diseases affecting the central nervous system during neonatal development, such as "cerebral" lactic acidosis, glutaric aciduria type II, dihydrolipoyl dehydrogenase (E3) deficiency, and propionic acidemia. More recently it has been noted that elevated levels of alpha-hydroxybutyrate in the plasma is a good marker for early-stage type II diabetes (PMID: 19166731). It was concluded from studies done in the mid-1970s that an increased NADH2/NAD ratio was the most important factor for the production of 2-hydroxybutyric acid (PMID: 168632). 2-Hydroxybutyric acid is an organic acid that is involved in propanoate metabolism. It is produced in mammalian tissues (principaly hepatic) that catabolize L-threonine or synthesize glutathione. Oxidative stress or detoxification demands can dramatically increase the rate of hepatic glutathione synthesis. Under such metabolic stress conditions, supplies of L-cysteine for glutathione synthesis become limiting, so homocysteine is diverted from the transmethylation pathway forming methionine into the transsulfuration pathway forming cystathionine. 2-Hydroxybutyrate is released as a by-product when cystathionine is cleaved to cysteine that is incorporated into glutathione. 2-Hydroxybutyric acid is often found in the urine of patients suffering from lactic acidosis and ketoacidosis. 2-Hydroxybutyric acid generally appears at high concentrations in situations related to deficient energy metabolism (e.g., birth asphyxia) and also in inherited metabolic diseases affecting the central nervous system during neonatal development, such as "cerebral" lactic acidosis, glutaric aciduria type II, dihydrolipoyl dehydrogenase (E3) deficiency, and propionic acidemia. More recently it has been noted that elevated levels of alpha-hydroxybutyrate in the plasma is a good marker for early stage type II diabetes (PMID: 19166731). It was concluded from studies done in the mid 1970s that an increased NADH2/NAD ratio was the most important factor for the production of 2-hydorxybutyric acid (PMID: 168632) [HMDB] 2-Hydroxybutyric acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=565-70-8 (retrieved 2024-07-16) (CAS RN: 600-15-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). (S)-2-Hydroxybutanoic acid is the S-enantiomer of?2-Hydroxybutanoic acid. 2-Hydroxybutanoic acid, a coproduct of protein metabolism, is an insulin resistance (IR) biomarker[1].

Aloeresin A

C28H28O11 (540.1632)

Butanone

C4H8O (72.0575)

Butanone occurs as a natural product. It is made by some trees and found in some fruits and vegetables in small amounts. It is also released to the air from car and truck exhausts. The known health effects to people from exposure to butanone are irritation of the nose, throat, skin, and eyes. (wikipedia).

2-Heptanone

C7H14O (114.1045)

2-Heptanone, also known as butylacetone or heptan-2-one, belongs to the class of organic compounds known as ketones. These are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be a hydrogen atom). Ketones that have one or more alpha-hydrogen atoms undergo keto-enol tautomerization, the tautomer being an enol. Thus, 2-heptanone is considered to be an oxygenated hydrocarbon lipid molecule. 2-Heptanone is a ketone with the molecular formula C7H14O. 2-Heptanone is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. 2-Heptanone exists in all living species, ranging from bacteria to humans. 2-Heptanone is a sweet, cinnamon, and coconut tasting compound. 2-Heptanone is found, on average, in the highest concentration within a few different foods, such as corns, cow milk, and peppermints. 2-Heptanone has also been detected, but not quantified in several different foods, such as tarragons, blackberries, tortilla chips, ceylon cinnamons, and evergreen blackberries. 2-Heptanone is one of the metabolites of n-heptane found in the urine of employees exposed to heptane in shoe and tire factories. 2-Heptanone, with regard to humans, has been found to be associated with several diseases such as ulcerative colitis, nonalcoholic fatty liver disease, crohns disease, and hepatic encephalopathy; 2-heptanone has also been linked to the inborn metabolic disorder celiac disease. It is a colorless to white liquid with a banana-like, fruity odor. Present in apple, morello cherry, feijoa fruit, grapes, quince, clove bud, cheeses, wines, black tea, raw shrimp, Ceylon cinnamon, rancid coconut oil and other foodstuffsand is also a minor constituent of plant oils. Flavour ingredient

Isopentanol

C5H12O (88.0888)

Isopentanol, also known as isoamyl alcohol or 3-methylbutanol, belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). Thus, isopentanol is considered to be a fatty alcohol lipid molecule. Isopentanol is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Isopentanol exists in all eukaryotes, ranging from yeast to humans. Isopentanol is an alcoholic, banana, and burnt tasting compound. Isopentanol is found, on average, in the highest concentration within milk (cow). Isopentanol has also been detected, but not quantified, in several different foods, such as chinese cinnamons, grapefruits, walnuts, wild leeks, and spearmints. This could make isopentanol a potential biomarker for the consumption of these foods. Isopentanol is one of several isomers of amyl alcohol. Isopentanol is the major higher chain alcohol in alcoholic beverages and is present in cider, mead, beer, wine, and spirits to varying degrees, being obtained by the fermentation of starches. Isopentanol, with regard to humans, has been found to be associated with the diseases such as ulcerative colitis; isopentanol has also been linked to the inborn metabolic disorder celiac disease. Isopentanol is a metabolite found in Escherichia (PMID:18676713). Isopentyl alcohol is one of several isomers of amyl alcohol. It is a by-product of gut microbial fermentation (PMID: 17452087). It can be produced by 3-methylbutanal reductase (EC 1.1.1.265) from 3 methylbutanal. Isopentyl alcohol is the major higher chain alcohol in alcoholic beverages and is present in cider, mead, beer, wine, and spirits to varying degrees, being obtained by the fermentation of starches. Isopentanol has been shown to induce expression of CYP3A and CYP2E1 in human liver (PMID: 7574728). Isopentyl alcohol can also be found in many foods, some of which are chinese cabbage, white cabbage, elliotts blueberry, and pasta. It can be used as a flavouring agent.

Methyl isobutyl ketone

C6H12O (100.0888)

Methyl isobutyl ketone (MIBK) is an organic solvent. MIBK is among the top ten most popular organic solvents used in industry. MIBK is occasionally found as a volatile component of urine. MIBK in urine is considered as a biological marker of occupational exposure to this solvent. Olfactory perception is significant but adaptation may occur. The typical toxicity effects of MIBK in humans exposed at 50 to 100 ppm are mucous membrane irritation and weak effects on the central nervous system (CNS) such as headache. Visual dysfunction has been reported in workers exposed to a mixture of organic solvents containing MIBK. Memory impairment was detected in clinical observation on a 44-year-old man who had been exposed to MIBK at 100 ppm for more than 10 years. Regarding to the route of absorption, skin penetration of MIBK is substantial. (PMID: 12592578, 17485256, 16464817, 5556886). Present in orange, lemon, concord grape, vinegar, cheeses, cooked beef, roasted peanut and other foodstuffs. Flavouring ingredient

Propyl alcohol

C3H8O (60.0575)

Propyl alcohol, also known as 1-propanol, n-propanol, or simply propanol, belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds in which a hydroxy group is bonded to a primary carbon, with the general structure RCOH (R=alkyl, aryl). Propyl alcohol is a colourless, volatile liquid that is fully miscible with water. It has a sweet odour and an alcoholic, fermented, fusel taste. Propyl alcohol exists in all living species, ranging from bacteria to plants to humans. Propanol can be produced through fermentation of sugars by bacteria and yeast and small amounts are produced by gut microflora. Propanol has been identified as a fecal biomarker of Clostridium difficile infection (PMID: 30986230). When ingested, 1-propanol is metabolized by alcohol dehydrogenase to propionic acid leading to metabolic acidosis and an elevated anion gap (PMID: 18375643). It can be found in small amounts in alcoholic beverages such as wine. Industrially, the major use of 1-propanol is as a solvent as well as an intermediate in forming other industrially important compounds. It is used as a carrier and extraction solvent for natural products, such as flavourings, vegetable oils, resins, waxes, and gums, and as a solvent for synthetic polymers, such as polyvinyl butyral, cellulose esters, lacquers, and PVC adhesives. Other solvent applications include the use of 1-propanol in the polymerization and spinning of acrylonitrile, in flexographic printing inks, and in the dyeing of wool. 1-Propanol is used for both its solvent and antiseptic properties in drugs and cosmetics, such as lotions, soaps, and nail polishes (IPCS INCHEM, EHC 102). Both 1-propanol and 2-propanol are often used in hand disinfectants as they have excellent bactericidal activity. 1-Propanol is used less in industry than 2-propanol as it is more expensive and it is a toxicant that has a similar taste to ethanol, so 2-propanol is used as its unpleasant smell discourages abuse. Propyl alcohol, also known as propanol or ethylcarbinol, is a member of the class of compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). Thus, propyl alcohol is considered to be a fatty alcohol lipid molecule. Propyl alcohol is soluble (in water) and an extremely weak acidic compound (based on its pKa). Propyl alcohol can be found in a number of food items such as cashew nut, chinese mustard, greenthread tea, and chayote, which makes propyl alcohol a potential biomarker for the consumption of these food products. Propyl alcohol can be found primarily in blood, feces, and saliva, as well as in human fibroblasts tissue. Propyl alcohol exists in all eukaryotes, ranging from yeast to humans. In humans, propyl alcohol is involved in the sulfate/sulfite metabolism. Propyl alcohol is also involved in sulfite oxidase deficiency, which is a metabolic disorder. 1-Propanol, n-propanol, or propan-1-ol : CH3CH2CH2OH, the most common meaning 2-Propanol, Isopropyl alcohol, isopropanol, or propan-2-ol : (CH3)2CHOH . D - Dermatologicals > D08 - Antiseptics and disinfectants > D08A - Antiseptics and disinfectants C - Cardiovascular system > C10 - Lipid modifying agents > C10A - Lipid modifying agents, plain

2-Pentanone

C5H10O (86.0732)

2-Pentanone, also known as ethyl acetone or fema 2842, belongs to the class of organic compounds known as ketones. These are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be a hydrogen atom). Ketones that have one or more alpha-hydrogen atoms undergo keto-enol tautomerization, the tautomer being an enol. 2-Pentanone is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Thus, 2-pentanone is considered to be an oxygenated hydrocarbon lipid molecule. 2-Pentanone is a sweet, alcohol, and banana tasting compound. 2-Pentanone is found, on average, in the highest concentration within milk (cow). 2-Pentanone has also been detected, but not quantified, in several different foods, such as fats and oils, corns, apples, evergreen blackberries, and fruits. This could make 2-pentanone a potential biomarker for the consumption of these foods. 2-Pentanone, with regard to humans, has been found to be associated with several diseases such as ulcerative colitis, nonalcoholic fatty liver disease, and crohns disease; 2-pentanone has also been linked to the inborn metabolic disorder celiac disease. Isolated from soya oil (Glycine max), pineapple and a few other plant sources

2-Hydroxyadipic acid

C6H10O5 (162.0528)

2-Hydroxyadipic acid is a hydroxy-dicarboxylic acid formed by the reduction of 2-ketoadipic acid. A deficiency of 2-ketoadipic dehydrogenase causes 2-ketoadipic acidemia or 2-oxoadipic acidemia (OMIM: 245130), a genetic disorder characterized by accumulation and excretion of 2-hydroxyadipic acid (with 2-ketoadipic and 2-aminoadipic) (OMMBID - The Online Metabolic and Molecular Bases of Inherited Disease, CH.95). When present in sufficiently high levels, 2-hydroxyadipic acid can act as an acidogen and a metabotoxin. An acidogen is an acidic compound that induces acidosis, which has multiple adverse effects on many organ systems. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of 2-hydroxyadipic acid are associated with at least three inborn errors of metabolism including 2-oxoadipic acidemia, 2-aminoadipic aciduria, and 2-oxoadipic aciduria. 2-Hydroxyadipic acid is an organic acid. Abnormally high levels of organic acids in the blood (organic acidemia), urine (organic aciduria), the brain, and other tissues lead to general metabolic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart abnormalities, kidney abnormalities, liver damage, seizures, coma, and possibly death. These are also the characteristic symptoms of the untreated IEMs mentioned above. Many affected children with organic acidemias experience intellectual disability or delayed development. In adults, acidosis or acidemia is characterized by headaches, confusion, feeling tired, tremors, sleepiness, and seizures. 2-Hydroxyadipic acid is a hydroxy-dicarboxylic acid formed by the reduction of 2-ketoadipic acid. Deficiency of 2-ketoadipic dehydrogenase causes 2-ketoadipic acidemia (OMIM 245130), a condition characterized by accumulation and excretion of 2-hydroxyadipic acid (with 2-ketoadipic and 2-aminoadipic) probably without adverse phenotypic effects.(OMMBID - The Metabolic and Molecular Bases of Inherited Disease, CH.95). A method involving derivatization and combined gas chromatography--mass spectrometry has been recently developed to separate the enantiomers of 3-hydroxyadipic acid (PMID: 3980660). It has been shown that 3-hydroxyadipic acid excreted in urine consists of at least 95\\\% of the L-enantiomer. This finding supports the hypothesis that dicarboxylic acids are degraded by ordinary beta-oxidation, and indicates that adipic acid may be converted into succinic acid. (PMID: 3980660) [HMDB] 2-Hydroxyadipic acid is an organic acid, formed by the reduction of 2-ketoadipic acid.

Dimethyl sulphone

C2H6O2S (94.0088)

Dimethyl sulfone, also known as sulfonylbismethane or lignisul MSM, belongs to the class of organic compounds known as sulfones. Sulfones are compounds containing a sulfonyl group, which has the general structure RS(=O)2R (R,R =alkyl, aryl), attached to two carbon atoms. Dimethyl sulfone (DMSO2) is an organic sulfur compound belonging to a class of chemicals known as sulfones. It derives from dietary sources, from intestinal bacterial metabolism and from human endogenous methanethiol metabolism. DMSO2 reflects its close chemical relationship to dimethyl sulfoxide (DMSO), which differs only in the oxidation state of the sulfur atom. Dimethyl sulfone is possibly neutral. Dimethyl sulfone exists in all living organisms, ranging from bacteria to humans. DMSO2 is the primary metabolite of DMSO in humans, and it shares some of the properties of DMSO. Dimethyl sulfone is sulfurous tasting compound. dimethyl sulfone is found on average in the highest concentration in milk (cow). Dimethyl sulfone has also been detected, but not quantified in asparagus and guava. This could make dimethyl sulfone a potential biomarker for the consumption of these foods. Dimethyl sulfone can be found in Afipia. It occurs naturally in some primitive plants and is present in small amounts in many foods and beverages. Dimethyl sulfone can be found in plasma and CSF of normal humans. Methylsulfonylmethane (MSM) is an organosulfur compound with the formula (CH3)2SO2. It is also known by several other names including DMSO2, methyl sulfone, and dimethyl sulfone. This colorless solid features the sulfonyl functional group and is considered relatively inert chemically. It occurs naturally in some primitive plants and is present in small amounts in many foods and beverages and it is marketed as a dietary supplement. Dimethyl sulfone is found in guava. C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent > C2198 - Nonnarcotic Analgesic D000893 - Anti-Inflammatory Agents Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3]. Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3].

Aloinoside B

C27H32O13 (564.1843)

Aloinoside A is a constituent of Aloe ferox and other Aloe species. Isolated from leaves of Aloe cf. perryi

Butyl formate

C5H10O2 (102.0681)

Butyl formate is a formate ester resulting from the formal condensation of formic acid with the hydroxy group of butan-1-ol. It has been found in apples, strawberries, sherry and Pamesan cheese, and it has a fruity, plum-like odour and taste. It has a role as a polar aprotic solvent, a flavouring agent and a fragrance. It derives from a butan-1-ol. Butyl formate, also known as butyl methanoate or fema 2916, belongs to the class of organic compounds known as carboxylic acid esters. These are carboxylic acid derivatives in which the carbon atom from the carbonyl group is attached to an alkyl or an aryl moiety through an oxygen atom (forming an ester group). Butyl formate has been detected, but not quantified, in blackcurrants and pineapples. Flavouring agent. Butyl formate is found in pineapple and blackcurrant.

Mandelic acid

C8H8O3 (152.0473)

It is an isomer of cresotinic acid (2-hydroxy-3-methylbenzoic acid) and oxymethylbenzoic acid (2-methoxybenzoic acid). Derivatives of mandelic acid are formed as a result of metabolism of adrenaline and noradrenaline by monoamine oxidase and catechol-o-methyl transferase. It is also present in certain skin care products, is an intermediate molecule in the production of other biochemicals, may be used as an analytical reagent and is a precursor in the manufacture of dyes. Mandelic acid is an aromatic alpha hydroxy acid with the molecular formula C8H8O3. It is a white crystalline solid that is soluble in water and most common organic solvents. Mandelic acid is found to be associated with phenylketonuria, which is an inborn error of metabolism. It is an isomer of cresotinic acid (2-hydroxy-3-methylbenzoic acid) and oxymethylbenzoic acid (2-methoxybenzoic acid). Derivatives of mandelic acid are formed as a result of metabolism of adrenaline and noradrenaline by monoamine oxidase and catechol-o-methyl transferase. It is also present in certain skin care products, is an intermediate molecule in the production of other biochemicals, may be used as an analytical reagent and is a precursor in the manufacture of dyes. B - Blood and blood forming organs > B05 - Blood substitutes and perfusion solutions > B05C - Irrigating solutions > B05CA - Antiinfectives D000890 - Anti-Infective Agents > D000892 - Anti-Infective Agents, Urinary > D008333 - Mandelic Acids Acquisition and generation of the data is financially supported in part by CREST/JST. J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use C254 - Anti-Infective Agent > C255 - Urinary Anti-Infective Agent KEIO_ID M057 Mandelic acid ((±)-Mandelic acid), an alpha-hydroxycarboxylic acid, has been widely used as an intermediate of pharmaceutical and fine chemicals. Mandelic acid shows antimicrobial activity and has been used for the research of urinary tract infections and vaginal trichomoniasis. Mandelic acid exhibits high sperm-immobilizing activity and low vaginal irritation[1][2].

Ribonic acid

C5H10O6 (166.0477)

Ribonic acid (CAS: 17812-24-7) is a product of the enzyme ribose 1-dehydrogenase (NADP+) [EC 1.1.1.115] (KEGG). Ribonic acid is a product of the enzyme ribose 1-dehydrogenase (NADP+) [EC 1.1.1.115] (KEGG). [HMDB]

ALOINOSIDE B

C27H32O13 (564.1843)

2-Hydroxyhexanoic acid

C6H12O3 (132.0786)

A hydroxy fatty acid that is caproic (hexanoic) acid substituted by a hydroxy group at position 2. 2-Hydroxyhexanoic acid is an endogenous metabolite.

Homovanillic acid (HVA)

C9H10O4 (182.0579)

Homovanillic acid (HVA), also known as homovanillate, belongs to the class of organic compounds known as methoxyphenols. Methoxyphenols are compounds containing a methoxy group attached to the benzene ring of a phenol moiety. HVA is also classified as a catechol. HVA is a major catecholamine metabolite that is produced by a consecutive action of monoamine oxidase and catechol-O-methyltransferase on dopamine. HVA is typically elevated in patients with catecholamine-secreting tumors (such as neuroblastoma, pheochromocytoma, and other neural crest tumors). HVA levels are also used in monitoring patients who have been treated for these kinds tumors. HVA levels may also be altered in disorders of catecholamine metabolism such as monoamine oxidase-A (MOA) deficiency. MOA deficiency can cause decreased urinary HVA values, while a deficiency of dopamine beta-hydrolase (the enzyme that converts dopamine to norepinephrine) can cause elevated urinary HVA values. Within humans, HVA participates in a number of enzymatic reactions. In particular, HVA and pyrocatechol can be biosynthesized from 3,4-dihydroxybenzeneacetic acid and guaiacol. This reaction is catalyzed by the enzyme known as catechol O-methyltransferase. In addition, HVA can be biosynthesized from homovanillin through the action of the enzyme known aldehyde dehydrogenase. HVA has recently been found in a number of beers and appears to arise from the fermentation process (https://doi.org/10.1006/fstl.1999.0593). HVA is also a metabolite of Bifidobacterium (PMID: 24958563) and the bacterial breakdown of dietary flavonoids. Dietary flavonols commonly found in tomatoes, onions, and tea, can lead to significantly elevated levels of urinary HVA (PMID: 20933512). Likewise, the microbial digestion of hydroxytyrosol (found in olive oil) can also lead to elevated levels of HVA in humans (PMID: 11929304). Homovanillic acid is a monocarboxylic acid that is the 3-O-methyl ether of (3,4-dihydroxyphenyl)acetic acid. It is a catecholamine metabolite. It has a role as a human metabolite and a mouse metabolite. It is a member of guaiacols and a monocarboxylic acid. It is functionally related to a (3,4-dihydroxyphenyl)acetic acid. It is a conjugate acid of a homovanillate. Homovanillic acid is a natural product found in Aloe africana, Ginkgo biloba, and other organisms with data available. Homovanillic Acid is a monocarboxylic acid that is a catecholamine metabolite. Homovanillic acid may be used a marker for metabolic stress, tobacco usage or the presence of a catecholamine secreting tumor, such as neuroblastoma or pheochromocytoma. Homovanillic acid is a metabolite found in or produced by Saccharomyces cerevisiae. A 3-O-methyl ETHER of (3,4-dihydroxyphenyl)acetic acid. See also: Ipomoea aquatica leaf (part of). Homovanillic acid is a major catecholamine metabolite. 3-Methoxy-4-hydroxyphenylacetic acid is found in beer, olive, and avocado. A monocarboxylic acid that is the 3-O-methyl ether of (3,4-dihydroxyphenyl)acetic acid. It is a catecholamine metabolite. Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency. Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency.

Pentacosanoic acid

C25H50O2 (382.3811)

Pentacosanoic acid, also known as pentacosanoate or hyenate, is a straight-chain saturated fatty acid and a very long-chain fatty acid. It is a conjugate acid of a pentacosanoate. Pentacosanoic acid belongs to the class of organic compounds known as very long-chain fatty acids. These are fatty acids with an aliphatic tail that contains at least 22 carbon atoms. Pentacosanoic acid is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Pentacosanoic acid is a potentially toxic compound. Pentacosanoic acid is a straight-chain saturated fatty acid and a very long-chain fatty acid. It is a conjugate acid of a pentacosanoate. Pentacosanoic acid is a natural product found in Staphisagria macrosperma, Rhizophora apiculata, and other organisms with data available. Isolated from Citrus bergamia (bergamot orange) Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1]. Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1].

2-Methyltetrahydrofuran-3-one

C5H8O2 (100.0524)

2-Methyltetrahydrofuran-3-one, also known as coffee furanone, is a member of the class of compounds known as furanones. Furanones are compounds containing a furan ring bearing a ketone group. 2-Methyltetrahydrofuran-3-one is soluble (in water) and an extremely weak acidic compound (based on its pKa). 2-Methyltetrahydrofuran-3-one is a flavouring agent and is a volatile constituent of coffee and coffee products. 2-Methyltetrahydrofuran-3-one is present in many foods. Dihydro-2-methyl-3(2H)-furanone is a member of oxolanes. 2-Methyltetrahydrofuran-3-one is a natural product found in Aloe africana, Mangifera indica, and Nicotiana tabacum with data available. It is used as a food additive . 2-Methyltetrahydrofuran-3-one is one of the volatile constituents of roasted coffee[1]. 2-Methyltetrahydrofuran-3-one is one of the volatile constituents of roasted coffee[1].

4-Methoxycinnamic acid

C10H10O3 (178.063)

4-Methoxycinnamic acid, also known as para-methoxycinnamate or O-methyl-p-coumarate, belongs to the class of organic compounds known as cinnamic acids. These are organic aromatic compounds containing a benzene and a carboxylic acid group forming 3-phenylprop-2-enoic acid. Outside of the human body, 4-Methoxycinnamic acid is found, on average, in the highest concentration within turmerics. 4-Methoxycinnamic acid has also been detected, but not quantified in cow milk and wild celeries. This could make 4-methoxycinnamic acid a potential biomarker for the consumption of these foods. 4-methoxycinnamic acid is a methoxycinnamic acid having a single methoxy substituent at the 4-position on the phenyl ring. It is functionally related to a cinnamic acid. 4-Methoxycinnamic acid is a natural product found in Balanophora tobiracola, Murraya euchrestifolia, and other organisms with data available. Esters of p-methoxycinnamic acid are among the popular UV-B screening compounds used in various cosmetic formulations in sunscreen products. trans-p-Methoxycinnamic acid is found in wild celery and turmeric. (E)-3-(4-Methoxyphenyl)acrylic acid (compound 3) is isolated from Arachis hypogaea, Scrophularia buergeriana Miquel, Aquilegia vulgaris, Anigozanthos preissii and so on. (E)-3-(4-Methoxyphenyl)acrylic acid shows significant hepatoprotective activity, anti-amnesic, cognition-enhancing activity, antihyperglycemic, and neuroprotective activities[1]. (E)-3-(4-Methoxyphenyl)acrylic acid (compound 3) is isolated from Arachis hypogaea, Scrophularia buergeriana Miquel, Aquilegia vulgaris, Anigozanthos preissii and so on. (E)-3-(4-Methoxyphenyl)acrylic acid shows significant hepatoprotective activity, anti-amnesic, cognition-enhancing activity, antihyperglycemic, and neuroprotective activities[1]. 4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii. 4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii.

2-Hydroxyvaleric acid

C5H10O3 (118.063)

2-Hydroxyvaleric acid is an organic acid present in human biofluids. Its presence in urine has been associated with lactic acidosis, which occurs in Succinic Acidemia (OMIM 600335), a syndrome of organic acidemia associated with congenital lactic acidosis and decreased NADH-cytochrome c reductase activity. 2-Hydroxyvaleric acid presence associated with lactic acidosis has also been found in Propionyl-CoA carboxylase deficiency (OMIM 253260), or Multiple carboxylase deficiency (MCD), an autosomal recessive metabolic disorder characterized primarily by cutaneous and neurologic abnormalities. (PMID: 9389332, 1790187, 3378323, 3383430, 7313494) [HMDB] 2-Hydroxyvaleric acid is an organic acid present in human biofluids. Its presence in urine has been associated with lactic acidosis, which occurs in Succinic Acidemia (OMIM 600335), a syndrome of organic acidemia associated with congenital lactic acidosis and decreased NADH-cytochrome c reductase activity. 2-Hydroxyvaleric acid presence associated with lactic acidosis has also been found in Propionyl-CoA carboxylase deficiency (OMIM 253260), or Multiple carboxylase deficiency (MCD), an autosomal recessive metabolic disorder characterized primarily by cutaneous and neurologic abnormalities. (PMID: 9389332, 1790187, 3378323, 3383430, 7313494).

2-Hydroxycaproic acid

C6H12O3 (132.0786)

2-hydroxycaproic acid, also known as 2-hydroxyhexanoic acid is a hydroxy fatty acid that is caproic (hexanoic) acid substituted by a hydroxy group at position 2. It has a role as an animal metabolite. It derives from a hexanoic acid. It is a conjugate acid of a 2-hydroxyhexanoate. 2-hydroxycaproic acid is a branched-chain alpha-keto acid that have been reported in normal human blood (PMID:7130306) and in normal amniotic fluid (PMID:7076774). It has been found that 2-hydroxycaproic acid is the most significant metabolite found in the CSF of patients infected with Nocardia. Nocardia sp. is an uncommon cause of meningitis, and Nocardia meningitis has a clinical picture similar to that of tuberculous meningitis (PMID:3818936; PMID:20615997). 2-Hydroxycaproic acid is a branched-chain alpha-keto acid that have been reported in normal human blood (PMID: 7130306) and in normal amniotic fluid. (PMID: 7076774) 2-Hydroxyhexanoic acid is an endogenous metabolite.

3-Hydroxymandelic acid

C8H8O4 (168.0423)

3-Hydroxymandelic acid, also known as m-hydroxymandelate or MHMA, is a 2-hydroxy monocarboxylic acid. 3-Hydroxymandelic acid is the dehydroxylated (positions 2 and 3‚Äô) derivative of phenylacetic acid. It is a white crystalline solid that is soluble in water and polar organic solvents. It derives from a mandelic acid. Mandelic acid is a substrate or product of several biochemical processes called the mandelate pathway. Mandelate racemase interconverts the two enantiomers via a pathway that involves cleavage of the alpha-CH bond. Mandelate dehydrogenase is yet another enzyme on this pathway. Mandelate also arises from trans-cinnamate via phenylacetic acid, which is hydroxylated. Derivatives of mandelic acid, such as 3-hydroxymandelic acid, are formed as a result of metabolism of adrenaline and noradrenaline by monoamine oxidase and catechol-O-methyl transferase. m-hydroxymandelic acid or 3-hyrodxymandelic acid is a metabolic breakdown product of m-octopamine, m-synephrine (phenylephrine) and m-tyrosine. It is a naturally occuring catecholamine metabolite. Concentrations of m-hydroxymandelic acid can be elevated 20- to 30-fold in neuroblastoma patients. [HMDB] D000890 - Anti-Infective Agents > D000892 - Anti-Infective Agents, Urinary > D008333 - Mandelic Acids 3-Hydroxymandelic Acid, a metabolite of Phenylephrine, Phenylephrine is a α-receptor agonist.

Methylsuccinate

C5H8O4 (132.0423)

Methylsuccinic acid (CAS: 498-21-5) is a normal metabolite found in human fluids. Increased urinary levels of methylsuccinic acid (together with ethylmalonic acid) are the main biochemical measurable features in ethylmalonic encephalopathy (OMIM: 602473), a rare metabolic disorder with an autosomal recessive mode of inheritance that is clinically characterized by neuromotor delay, hyperlactic acidemia, recurrent petechiae, orthostatic acrocyanosis, and chronic diarrhea (PMID:12382164). The underlying biochemical defect involves isoleucine catabolism (PMID:9667231). Methylsuccinic acid levels were found to have decreased in the urine of animals under D-serine-induced nephrotoxicity (D-serine causes selective necrosis of the proximal straight tubules in the rat kidney) (PMID:15596249). Moreover, methylsuccinic acid is found to be associated with ethylmalonic encephalopathy, isovaleric acidemia, and medium-chain acyl-CoA dehydrogenase deficiency, which are also inborn errors of metabolism. Methylsuccinic acid is a normal metabolite found in human fluids. Increased urinary levels of Methylsuccinic acid (together with ethylmalonic acid) are the main biochemical measurable features in ethylmalonic encephalopathy (OMIM 602473 ), a rare metabolic disorder with an autosomal recessive mode of inheritance that is clinically characterized by neuromotor delay, hyperlactic acidemia, recurrent petechiae, orthostatic acrocyanosis, and chronic diarrhea. (PMID 12382164) T he underlying biochemical defect involves isoleucine catabolism. (PMID 9667231) 2-Methylsuccinic acid is a normal metabolite in human fluids and the main biochemical measurable features in ethylmalonic encephalopathy.

Heneicosanoic acid

C21H42O2 (326.3185)

Henicosanoic acid, also known as N-heneicosanoate or 21:0,is a long-chain fatty acid that is henicosane in which one of the methyl groups has been oxidised to give the corresponding carboxylic acid. It is a straight-chain saturated fatty acid and a long-chain fatty acid. It is a conjugate acid of a henicosanoate. Heneicosanoic acid belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Heneicosanoic acid is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Heneicosanoic acid is a potentially toxic compound. Isolated from olive oil (Olea europaea) Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3]. Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3].

2-Phenylpropionate

C9H10O2 (150.0681)

2-Phenylpropionate is an intermediate in alpha-Methylstyrene (2-phenylpropylene) metabolism. It was identified in human liver slices in small amounts. It is. likely that 2-Phenylpropionate derives from 2-phenylpropionaldehyde, formed from a. 1,2-hydride shift during the transfer of active oxygen to the vinyl. group, as has been proposed for the cytochrome P450-mediated oxidation. of styrene to form phenylacetaldehyde. (PMID: 11159807). 2-Phenylpropionate has been found to be a metabolite of Acinetobacter, Bacteroides, Bifidobacterium, Clostridium, Enterococcus, Escherichia, Eubacterium, Klebsiella, Lactobacillus, Pseudomonas and Staphylococcus (PMID: 19961416). 2-Phenylpropionate is an intermediate in alpha-Methylstyrene (2-phenylpropylene) metabolism. It was identified in human liver slices in small amounts. It is 2-Phenylpropionic acid is an intermediate in alpha-Methylstyrene metabolism. 2-Phenylpropionic acid is an intermediate in alpha-Methylstyrene metabolism.

(2E)-2-Heptenal

C7H12O (112.0888)

(2E)-2-Heptenal, also known as 3-butylacrolein or 2-trans-heptenal, belongs to the class of organic compounds known as medium-chain aldehydes. These are an aldehyde with a chain length containing between 6 and 12 carbon atoms. (2E)-2-Heptenal is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Thus, (2E)-2-heptenal is considered to be a fatty aldehyde lipid molecule. Uremic toxins such as 2-Heptenal are actively transported into the kidneys via organic ion transporters (especially OAT3). (2E)-2-Heptenal is an almond, and fatty tasting compound. (2E)-2-Heptenal is found, on average, in the highest concentration within safflowers. (2E)-2-Heptenal has also been detected, but not quantified, in several different foods, such as roselles, common grapes, cucumbers, garden tomato, and evergreen blackberries. (2E)-2-Heptenal is a potentially toxic compound. Uremic toxins tend to accumulate in the blood either through dietary excess or through poor filtration by the kidneys. As a uremic toxin, this compound can cause uremic syndrome. Chronic exposure to uremic toxins can lead to a number of conditions including renal damage, chronic kidney disease and cardiovascular disease. This seems to be mediated by the direct binding or inhibition by uremic toxins of the enzyme NADPH oxidase (especially NOX4 which is abundant in the kidneys and heart) (A7868). Shortness of breath from fluid buildup in the space between the lungs and the chest wall (pleural effusion) can also be present. It can also cause changes in mental status, such as confusion, reduced awareness, agitation, psychosis, seizures, and coma. (2e)-2-heptenal, also known as 3-butylacrolein or alpha-heptenal, is a member of the class of compounds known as medium-chain aldehydes. Medium-chain aldehydes are an aldehyde with a chain length containing between 6 and 12 carbon atoms. Thus, (2e)-2-heptenal is considered to be a fatty aldehyde lipid molecule (2e)-2-heptenal is slightly soluble (in water) and an extremely weak basic (essentially neutral) compound (based on its pKa). (2e)-2-heptenal is an almond, fat, and fatty tasting compound and can be found in a number of food items such as watermelon, safflower, oat, and common grape, which makes (2e)-2-heptenal a potential biomarker for the consumption of these food products (2e)-2-heptenal can be found primarily in blood and saliva (2e)-2-heptenal is a non-carcinogenic (not listed by IARC) potentially toxic compound. As a uremic toxin, this compound can cause uremic syndrome. Uremic syndrome may affect any part of the body and can cause nausea, vomiting, loss of appetite, and weight loss. It can also cause changes in mental status, such as confusion, reduced awareness, agitation, psychosis, seizures, and coma. Abnormal bleeding, such as bleeding spontaneously or profusely from a very minor injury can also occur. Heart problems, such as an irregular heartbeat, inflammation in the sac that surrounds the heart (pericarditis), and increased pressure on the heart can be seen in patients with uremic syndrome. Shortness of breath from fluid buildup in the space between the lungs and the chest wall (pleural effusion) can also be present (T3DB).

(S)-2-Methyl-1-butanol

C5H12O (88.0888)

(S)-2-Methyl-1-butanol, also known as sec-butylcarbinol or 2-methyl butanol-1, belongs to the class of organic compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). (S)-2-Methyl-1-butanol is a very hydrophobic molecule, practically insoluble in water, and relatively neutral. Thus, (S)-2-methyl-1-butanol is considered to be a fatty alcohol lipid molecule. (S)-2-Methyl-1-butanol exists in all eukaryotes, ranging from yeast to humans. (S)-2-Methyl-1-butanol is a malt tasting compound. (S)-2-Methyl-1-butanol is found, on average, in the highest concentration within milk (cow) and it has also been detected, but not quantified, in several different foods, such as red raspberries, nectarines, carobs, wild leeks, and black-eyed pea. This could make (S)-2-methyl-1-butanol a potential biomarker for the consumption of these foods. Isolated from grapes, apples, tomatoes etc. (S)-2-Methyl-1-butanol is found in many foods, some of which are carrot, shallot, rose hip, and muskmelon.

2-Butanol

C4H10O (74.0732)

2-Butanol, or sec-butanol, is a chemical compound with formula C4H10O. This secondary alcohol is a flammable, colorless liquid that is soluble in 12 parts water and completely miscible with polar organic solvent such as ethers and other alcohols. Diluent in colour additive mixtures for marking food

3-Hexanol

C6H14O (102.1045)

3-Hexanol, also known as fema 3351 or 3-hexyl alcohol, belongs to the class of organic compounds known as secondary alcohols. Secondary alcohols are compounds containing a secondary alcohol functional group, with the general structure HOC(R)(R) (R,R=alkyl, aryl). 3-Hexanol is an alcoholic, ether, and medicinal tasting compound. 3-Hexanol is found, on average, in the highest concentration within safflowers. 3-Hexanol has also been detected, but not quantified, in several different foods, such as green bell peppers, orange bell peppers, pepper (c. annuum), red bell peppers, and yellow bell peppers. 3-Hexanol occurs naturally in the flavor and aroma of plants such as pineapple and is used as a food additive to add flavor. 3-Hexanol is found in many foods, some of which are pepper (c. annuum), red bell pepper, orange bell pepper, and green bell pepper.

Undecanedioic acid

C11H20O4 (216.1362)

Undecanedioic acid has been found in parts of human aortas with advanced atherosclerotic lesions associated with intercellular matrix macromolecules and specifically with elastin, and may be the result of an increased hydrolysis of esters and (or) a decreased esterification. (PMID:131675). Undecanedioic acid has been found (among other unusual dicarboxylic acids) in the urine from patients under hopantenate therapy during episodes of Reyes-like syndrome. (PMID:2331533). Undecanedioic acid has been found in parts of human aortas with advanced atherosclerotic lesions associated with intercellular matrix macromolecules and specifically with elastin, and may be the result of an increased hydrolysis of esters and (or) a decreased esterification. (PMID: 131675) Undecanedioic acid is associated with intercellular matrix macromolecules and specifically with elastin.

Linalool oxide (trans-pyranoid)

C10H18O2 (170.1307)

Linalool oxide (trans-pyranoid) is found in tea. This is the trans form of pyranoid linalool oxide, also called Linalool oxide C or Linalool oxide IV; there are 2 possible stereo-isomers

p-Menth-1-en-9-al

C10H16O (152.1201)

P-menth-1-ene-9-al, also known as alpha,4-dimethyl-3-cyclohexene-1-acetaldehyde, is a member of the class of compounds known as menthane monoterpenoids. Menthane monoterpenoids are monoterpenoids with a structure based on the o-, m-, or p-menthane backbone. P-menthane consists of the cyclohexane ring with a methyl group and a (2-methyl)-propyl group at the 1 and 4 ring position, respectively. The o- and m- menthanes are much rarer, and presumably arise by alkyl migration of p-menthanes. P-menth-1-ene-9-al is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). P-menth-1-ene-9-al is a herbal and spicy tasting compound found in wild celery, which makes P-menth-1-ene-9-al a potential biomarker for the consumption of this food product. p-Menth-1-en-9-al belongs to the family of Monocyclic Monoterpenes. These are monoterpenes containing 1 ring in the isoprene chain

Cnidiol C

C10H18O2 (170.1307)

Cnidiol C is found in citrus. Cnidiol C is a constituent of Citrus species.This is the pyranoid form of linalool oxide; there are 4 possible stereo-isomers Constituent of Citrus subspecies

Propyl formate

C4H8O2 (88.0524)

Propyl formate is found in apple. Propyl formate is a flavouring ingredient. Flavouring ingredient. Propyl formate is found in pineapple and apple.

(Z)-p-Methoxycinnamic acid

C10H10O3 (178.063)

4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii. 4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii.

Aloeresin B

C19H22O9 (394.1264)

Indole-5-carboxylic acid

C9H7NO2 (161.0477)

Nonadecenoic acid

C19H36O2 (296.2715)

Nonadecenoic acid, also known as nonadecenoate, is a member of the class of compounds known as long-chain fatty acids. Long-chain fatty acids are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Nonadecenoic acid is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Nonadecenoic acid can be found in peanut, which makes nonadecenoic acid a potential biomarker for the consumption of this food product.

Pentadecenoic acid

C15H28O2 (240.2089)

Pentadecenoic acid, also known as pentadecenoate, is a member of the class of compounds known as long-chain fatty acids. Long-chain fatty acids are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Pentadecenoic acid is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Pentadecenoic acid can be found in black elderberry, black walnut, and common buckwheat, which makes pentadecenoic acid a potential biomarker for the consumption of these food products.

L-5-Oxoproline

C5H7NO3 (129.0426)

C78276 - Agent Affecting Digestive System or Metabolism > C29703 - Antilipidemic Agent

Ketovaline

C5H8O3 (116.0473)

3-Methyl-2-oxobutanoic acid is a precursor of pantothenic acid in Escherichia coli.

3-phenylpropanoic acid

C9H10O2 (150.0681)

Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities.

Citramalic acid

C5H8O5 (148.0372)

Tiglic acid

C5H8O2 (100.0524)

A 2-methylbut-2-enoic acid having its double bond in trans-configuration. Tiglic acid is a monocarboxylic unsaturated organic acid found in croton oil and in several other natural products. Tiglic aci has a role as a plant metabolite[1]. Tiglic acid is a monocarboxylic unsaturated organic acid found in croton oil and in several other natural products. Tiglic aci has a role as a plant metabolite[1].

3-Methoxygallic acid

C8H8O5 (184.0372)

3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2]. 3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2].

2-Hydroxybutyric acid

C4H8O3 (104.0473)

A hydroxybutyric acid having a single hydroxyl group located at position 2; urinary secretion of 2-hydroxybutyric acid is increased with alcohol ingestion or vigorous physical exercise and is associated with lactic acidosis and ketoacidosis in humans and diabetes in animals. (S)-2-Hydroxybutanoic acid is the S-enantiomer of?2-Hydroxybutanoic acid. 2-Hydroxybutanoic acid, a coproduct of protein metabolism, is an insulin resistance (IR) biomarker[1].

MANDELIC ACID

C8H8O3 (152.0473)

B - Blood and blood forming organs > B05 - Blood substitutes and perfusion solutions > B05C - Irrigating solutions > B05CA - Antiinfectives A 2-hydroxy monocarboxylic acid that is acetic acid in which two of the methyl hydrogens are substituted by phenyl and hydroxyl groups. D000890 - Anti-Infective Agents > D000892 - Anti-Infective Agents, Urinary > D008333 - Mandelic Acids J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use C254 - Anti-Infective Agent > C255 - Urinary Anti-Infective Agent D-(-)-Mandelic acid is a natural compound isolated from bitter almonds. D-(-)-Mandelic acid is a natural compound isolated from bitter almonds. Mandelic acid ((±)-Mandelic acid), an alpha-hydroxycarboxylic acid, has been widely used as an intermediate of pharmaceutical and fine chemicals. Mandelic acid shows antimicrobial activity and has been used for the research of urinary tract infections and vaginal trichomoniasis. Mandelic acid exhibits high sperm-immobilizing activity and low vaginal irritation[1][2].

3-METHYL-2-BUTANONE

C5H10O (86.0732)

3-HYDROXYPICOLINIC ACID

C6H5NO3 (139.0269)

COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Profile spectrum of this record is given as a JPEG file.; [Profile] MCH00011.jpg Profile spectrum of this record is given as a JPEG file.; [Profile] MCH00010.jpg 3-Hydroxypicolinic acid is a picolinic acid derivative, and belongs to the pyridine family.

Campesterol

C28H48O (400.3705)

Disclaimer: While authors make an effort to ensure that the content of this record is accurate, the authors make no representations or warranties in relation to the accuracy or completeness of the record. This record do not reflect any viewpoints of the affiliation and organization to which the authors belong. Campesterol is a plant sterol with cholesterol lowering and anticarcinogenic effects. Campesterol is a plant sterol with cholesterol lowering and anticarcinogenic effects.

4-methoxycinnamic acid

C10H10O3 (178.063)

Annotation level-1 CONFIDENCE standard compound; INTERNAL_ID 8214 (E)-3-(4-Methoxyphenyl)acrylic acid (compound 3) is isolated from Arachis hypogaea, Scrophularia buergeriana Miquel, Aquilegia vulgaris, Anigozanthos preissii and so on. (E)-3-(4-Methoxyphenyl)acrylic acid shows significant hepatoprotective activity, anti-amnesic, cognition-enhancing activity, antihyperglycemic, and neuroprotective activities[1]. (E)-3-(4-Methoxyphenyl)acrylic acid (compound 3) is isolated from Arachis hypogaea, Scrophularia buergeriana Miquel, Aquilegia vulgaris, Anigozanthos preissii and so on. (E)-3-(4-Methoxyphenyl)acrylic acid shows significant hepatoprotective activity, anti-amnesic, cognition-enhancing activity, antihyperglycemic, and neuroprotective activities[1]. 4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii. 4-Methoxycinnamic acid is detected as natural phenylpropanoid in A. preissii.

Methylsuccinic acid

C5H8O4 (132.0423)

Acquisition and generation of the data is financially supported in part by CREST/JST. 2-Methylsuccinic acid is a normal metabolite in human fluids and the main biochemical measurable features in ethylmalonic encephalopathy.

2-Hydroxypentanoic acid

C5H10O3 (118.063)

A 2-hydroxy monocarboxylic acid that is valeric (pentanoic) acid substituted at the alpha-position by a hydroxy group. Acquisition and generation of the data is financially supported in part by CREST/JST.

3-Hydroxymandelic acid

C8H8O4 (168.0423)

D000890 - Anti-Infective Agents > D000892 - Anti-Infective Agents, Urinary > D008333 - Mandelic Acids A 2-hydroxy monocarboxylic acid that is mandelic acid substituted by a hydroxy group at position 3. Acquisition and generation of the data is financially supported in part by CREST/JST. 3-Hydroxymandelic Acid, a metabolite of Phenylephrine, Phenylephrine is a α-receptor agonist.

L-Pyroglutamicacid

C5H7NO3 (129.0426)

C78276 - Agent Affecting Digestive System or Metabolism > C29703 - Antilipidemic Agent

4-hydroxybenzoate

C7H6O3 (138.0317)

4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL. 4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.

2,3-Dihydroxybenzoic acid

C7H6O4 (154.0266)

A dihydroxybenzoic acid that is benzoic acid substituted by hydroxy groups at positions 2 and 3. It occurs naturally in Phyllanthus acidus and in the aquatic fern Salvinia molesta. D064449 - Sequestering Agents > D002614 - Chelating Agents > D007502 - Iron Chelating Agents Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion. Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion.

Azelaic Acid

C9H16O4 (188.1049)

D - Dermatologicals > D10 - Anti-acne preparations > D10A - Anti-acne preparations for topical use C254 - Anti-Infective Agent > C28394 - Topical Anti-Infective Agent D000970 - Antineoplastic Agents D003879 - Dermatologic Agents Annotation level-2 Azelaic acid is a nine-carbon dicarboxylic acid. Azelaic acid has antimicrobial activity against Propionibacterium acnes and Staphylococcus epidermidis through inhibition of microbial cellular prorein synthesis. Azelaic acid has hypopigmentation action resulting from its ability to scavenge free radicals[1][2]. Azelaic acid is a nine-carbon dicarboxylic acid. Azelaic acid has antimicrobial activity against Propionibacterium acnes and Staphylococcus epidermidis through inhibition of microbial cellular prorein synthesis. Azelaic acid has hypopigmentation action resulting from its ability to scavenge free radicals[1][2].

Isonicotinic acid

C6H5NO2 (123.032)

Isonicotinic acid is a metabolite of Isoniazid. Isoniazid is converted to Isonicotinic acid by hydrazinolysis, with the Isoniazid to Isonicotinic acid biotransformation also to be catalyzed by cytochrome P450 (CYP) enzymes, e.g., CYP2C[1].

hydrocinnamic acid

C9H10O2 (150.0681)

Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities.

Heneicosylic acid

C21H42O2 (326.3185)

Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3]. Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3].

7-hydroxy-5-methyl-2-(2-oxopropyl)-8-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]chromen-4-one

C19H22O9 (394.1264)

Homovanillic Acid

C9H10O4 (182.0579)

Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency. Homovanillic acid is a dopamine metabolite found to be associated with aromatic L-amino acid decarboxylase deficiency, celiac disease, growth hormone deficiency, and sepiapterin reductase deficiency.

p-Hydroxybenzoic acid

C7H6O3 (138.0317)

4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL. 4-Hydroxybenzoic acid, a phenolic derivative of benzoic acid, could inhibit most gram-positive and some gram-negative bacteria, with an IC50 of 160 μg/mL.

α-Ketoisovaleric acid

C5H8O3 (116.0473)

A 2-oxo monocarboxylic acid that is the 2-oxo derivative of isovaleric acid. 3-Methyl-2-oxobutanoic acid is a precursor of pantothenic acid in Escherichia coli.

Phenylpyruvic acid

C9H8O3 (164.0473)

Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1]. Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1].

Pyroglutamic acid

C5H7NO3 (129.0426)

2-hydroxyadipic acid

C6H10O5 (162.0528)

2-Hydroxyadipic acid is an organic acid, formed by the reduction of 2-ketoadipic acid.

2-Pyrocatechuic acid

C7H6O4 (154.0266)

Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion. Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion.

Citramalic acid

C5H8O5 (148.0372)

A 2-hydroxydicarboxylic acid that is malic acid (hydroxysuccinic acid) in which the hydrogen at position 2 is substituted by a methyl group.

2-FUROIC ACID

C5H4O3 (112.016)

A furoic acid having the carboxylic acid group located at position 2. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2].

Hydroxypropionic acid

C3H6O3 (90.0317)

A 3-hydroxy monocarboxylic acid that is propionic acid in which one of the hydrogens attached to the terminal carbon is replaced by a hydroxy group. Hydroxypropionic acid, also known as 3-hydroxypropionate or hydracrylic acid, belongs to beta hydroxy acids and derivatives class of compounds. Those are compounds containing a carboxylic acid substituted with a hydroxyl group on the C3 carbon atom. Hydroxypropionic acid is soluble (in water) and a weakly acidic compound (based on its pKa). Hydroxypropionic acid can be synthesized from propionic acid. Hydroxypropionic acid is also a parent compound for other transformation products, including but not limited to, beta-propiolactone, ascr#5, and 3-hydroxypropanoyl-CoA. Hydroxypropionic acid can be found in a number of food items such as apple, poppy, yam, and cupuaçu, which makes hydroxypropionic acid a potential biomarker for the consumption of these food products. Hydroxypropionic acid can be found primarily in blood, cerebrospinal fluid (CSF), feces, and urine. Hydroxypropionic acid exists in all living organisms, ranging from bacteria to humans. In humans, hydroxypropionic acid is involved in the propanoate metabolism. Hydroxypropionic acid is also involved in few metabolic disorders, which include malonic aciduria, malonyl-coa decarboxylase deficiency, and methylmalonic aciduria due to cobalamin-related disorders. Moreover, hydroxypropionic acid is found to be associated with biotinidase deficiency and propionic acidemia. Hydroxypropionic acid is a non-carcinogenic (not listed by IARC) potentially toxic compound. Hydroxypropanoic acid, or alternately hydroxypropionic acid, may refer to either of two isomeric chemical compounds: 3-Hydroxypropionic acid (hydracrylic acid) Lactic acid (2-hydroxypropanoic acid) . Chronically high levels of hydroxypropionic acid are associated with at least 5 inborn errors of metabolism including: Biotinidase deficiency, Malonic Aciduria, Methylmalonate Semialdehyde Dehydrogenase Deficiency, Methylmalonic Aciduria, Methylmalonic, Aciduria Due to Cobalamin-Related Disorders and Propionic acidemia (T3DB).

3-Hydroxyisovaleric acid

C5H10O3 (118.063)

A 3-hydroxy monocarboxylic acid that is isovaleric acid substituted at position 3 by a hydroxy group. Used as indicator of biotin deficiency. 3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2]. 3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2].

1-propanol

C3H8O (60.0575)

D - Dermatologicals > D08 - Antiseptics and disinfectants > D08A - Antiseptics and disinfectants C - Cardiovascular system > C10 - Lipid modifying agents > C10A - Lipid modifying agents, plain

UNDECANEDIOIC ACID

C11H20O4 (216.1362)

An alpha,omega-dicarboxylic acid that is nonane with two carboxylic acid groups at positions C-1 and C-9. Undecanedioic acid is associated with intercellular matrix macromolecules and specifically with elastin.

Suberic acid

C8H14O4 (174.0892)

An alpha,omega-dicarboxylic acid that is the 1,6-dicarboxy derivative of hexane. Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency. Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency.

Desaminotyrosine

C9H10O3 (166.063)

Desaminotyrosine is a microbially associated metabolite protecting from influenza through augmentation of type I interferon signaling. Desaminotyrosine is a microbially associated metabolite protecting from influenza through augmentation of type I interferon signaling.

picolinic acid

C6H5NO2 (123.032)

A pyridinemonocarboxylic acid in which the carboxy group is located at position 2. It is an intermediate in the metabolism of tryptophan. D064449 - Sequestering Agents > D002614 - Chelating Agents > D007502 - Iron Chelating Agents Picolinic acid (PCL 016) is a topical antiviral agent, which inhibits adenovirus replication in rabbits.

Pentacosylic acid

C25H50O2 (382.3811)

Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1]. Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1].

Methyl isobutyl ketone

C6H12O (100.0888)

2-HEPTANONE

C7H14O (114.1045)

Dimethyl sulfone

C2H6O2S (94.0088)

C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent > C2198 - Nonnarcotic Analgesic D000893 - Anti-Inflammatory Agents Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3]. Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3].

3-Hydroxypropanoic acid

C3H6O3 (90.0317)

HENEICOSANOIC ACID

C21H42O2 (326.3185)

3-Hydroxybutanoic acid

C4H8O3 (104.0473)

FA 11:1;O2

C11H20O4 (216.1362)

CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4427; ORIGINAL_PRECURSOR_SCAN_NO 4423 CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4442; ORIGINAL_PRECURSOR_SCAN_NO 4441 CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4399; ORIGINAL_PRECURSOR_SCAN_NO 4398 CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4432; ORIGINAL_PRECURSOR_SCAN_NO 4430 CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4426; ORIGINAL_PRECURSOR_SCAN_NO 4424 CONFIDENCE standard compound; INTERNAL_ID 476; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4416; ORIGINAL_PRECURSOR_SCAN_NO 4412 Undecanedioic acid is associated with intercellular matrix macromolecules and specifically with elastin.

Suberate

C8H14O4 (174.0892)

Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency. Suberic acid (Octanedioic acid) is found to be associated with carnitine-acylcarnitine translocase deficiency, malonyl-Coa decarboxylase deficiency.

3-Methyl-2-oxobutanoic acid

C5H8O3 (116.0473)

2-Hydroxyhexanedioic acid

C6H10O5 (162.0528)

2-Phenylpropionic acid

C9H10O2 (150.0681)

2-Phenylpropionic acid is an intermediate in alpha-Methylstyrene metabolism. 2-Phenylpropionic acid is an intermediate in alpha-Methylstyrene metabolism.

Pyrotartarate

C5H8O4 (132.0423)

2-Methylsuccinic acid is a normal metabolite in human fluids and the main biochemical measurable features in ethylmalonic encephalopathy.

b-Hydroxyisovalerate

C5H10O3 (118.063)

3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2]. 3-Hydroxyisovaleric acid is a normal endogenous metabolite excreted in the urine. The urinary excretion of 3-hydroxyisovaleric acid is early and sensitive indicator of biotin deficiency[1][2].

2-Methylbutan-1-ol

C5H12O (88.0888)

A primary alcohol that is isopentane substituted by a hydroxy group at position 1. (s)-2-methyl-1-butanol, also known as active amyl alcohol or 2-methylbutyl alcohol, is a member of the class of compounds known as primary alcohols. Primary alcohols are compounds comprising the primary alcohol functional group, with the general structure RCOH (R=alkyl, aryl). Thus, (s)-2-methyl-1-butanol is considered to be a fatty alcohol lipid molecule (s)-2-methyl-1-butanol is soluble (in water) and an extremely weak acidic compound (based on its pKa). (s)-2-methyl-1-butanol can be synthesized from isopentane (s)-2-methyl-1-butanol can also be synthesized into 2-methylbutyl acetate and 2-methylbutyl decanoate (s)-2-methyl-1-butanol is a malt tasting compound and can be found in a number of food items such as turmeric, salmonberry, garden cress, and horseradish tree, which makes (s)-2-methyl-1-butanol a potential biomarker for the consumption of these food products (s)-2-methyl-1-butanol can be found primarily in feces (s)-2-methyl-1-butanol exists in all eukaryotes, ranging from yeast to humans.

3-Hydroxymandelate

C8H8O4 (168.0423)

D000890 - Anti-Infective Agents > D000892 - Anti-Infective Agents, Urinary > D008333 - Mandelic Acids 3-Hydroxymandelic Acid, a metabolite of Phenylephrine, Phenylephrine is a α-receptor agonist.

2-heptenal

C7H12O (112.0888)

Isolated from soya bean oil (Glycine max). Flavouring constituent of many foods. 2-Heptenal is found in pulses.

FEMA 3373

C5H8O2 (100.0524)

2-Methyltetrahydrofuran-3-one is one of the volatile constituents of roasted coffee[1]. 2-Methyltetrahydrofuran-3-one is one of the volatile constituents of roasted coffee[1].

3-HEXANOL

C6H14O (102.1045)

Cnidiol C

C10H18O2 (170.1307)

propyl formate

C4H8O2 (88.0524)

BUTYL FORMATE

C5H10O2 (102.0681)

3-methylbutan-2-one

C5H10O (86.0732)

C21:0

C21H42O2 (326.3185)

Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3]. Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3].

FA 5:1;O2

C5H8O4 (132.0423)

D018377 - Neurotransmitter Agents > D018847 - Opioid Peptides D018377 - Neurotransmitter Agents > D004399 - Dynorphins 2-Methylsuccinic acid is a normal metabolite in human fluids and the main biochemical measurable features in ethylmalonic encephalopathy. Ethylmalonic acid is non-carcinogenic potentially toxic and associated with anorexia nervosa and malonyl-CoA decarboxylase deficiency.

FA 6:1;O3

C6H10O5 (162.0528)

2-Hydroxyadipic acid is an organic acid, formed by the reduction of 2-ketoadipic acid.

Pentan-2-one

C5H10O (86.0732)

A pentanone carrying an oxo substituent at position 2.

Heptan-2-one

C7H14O (114.1045)

A dialkyl ketone with methyl and pentyl as the alkyl groups.

3-Methylbutan-2-one

C5H10O (86.0732)

4-Methylpentan-2-one

C6H12O (100.0888)

3-phenylpropanoic acid

C9H10O2 (150.0681)

A monocarboxylic acid that is propionic acid substituted at position 3 by a phenyl group. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities.

2-Hydroxybutanoic acid

C4H8O3 (104.0473)

4-ETHYLPHENOL

C8H10O (122.0732)

A member of the class of phenols carrying an ethyl substituent at position 4. 4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine. 4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine.

AI3-00892

C9H10O2 (150.0681)

Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities. Hydrocinnamic acid is the major rhizospheric compound with known growth regulatory activities.

506-38-7

C25H50O2 (382.3811)

Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1]. Pentacosanoic acid is a 25-carbon long-chain saturated fatty acid. Pentacosanoic is a conjugate acid of a pentacosanoate[1].

Heptanone

C7H14O (114.1045)

Pentanone

C5H10O (86.0732)

Fuseloel

C5H12O (88.0888)

Meetco

C4H8O (72.0575)

Maruzen M

C8H10O (122.0732)

4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine. 4-Ethylphenol is a volatile phenolic compound associated with off-odour in wine.

furoic acid

C5H4O3 (112.016)

2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2]. 2-Furoic acid (Furan-2-carboxylic acid) is an organic compound produced through furfural oxidation[1]. 2-Furoic acid exhibits hypolipidemic effet, lowers both serum cholesterol and serum triglyceride levels in rats[2].

AI3-24194

C5H10O (86.0732)

AI3-24243

C4H8O2 (88.0524)

Hexone

C6H12O (100.0888)

Dimethyl sulfone

C2H6O2S (94.0088)

C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent > C2198 - Nonnarcotic Analgesic D000893 - Anti-Inflammatory Agents Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3]. Dimethyl sulfone (Methyl Sulfonyl Methane) is a metabolic product of endogenous methanethiol metabolism and intestinal bacterial metabolism. Dimethyl sulfone inhibits choriocapillary endothelial (CCE) cell proliferation, also has many biological effects, including antiinflammatory, antioxidant, and local anesthetic effects that could be neuroprotective[1][2][3].

N-Heneicosanoic acid

C21H42O2 (326.3185)

Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3]. Heneicosanoic acid is a long-chain saturated fatty acid which is found in plants and animals[1][2][3].

99-94-5

C8H8O2 (136.0524)

p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc. p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc.

c0242

C8H8O (120.0575)

m-Tolualdehyde (3-Methylbenzaldehyde) is a tolualdehyde compound with the methyl substituent at the 3-position. m-Tolualdehyde can be used as a food additive. m-Tolualdehyde (3-Methylbenzaldehyde) is a tolualdehyde compound with the methyl substituent at the 3-position. m-Tolualdehyde can be used as a food additive.

156-06-9

C9H8O3 (164.0473)

Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1]. Phenylpyruvic acid is used in the synthesis of 3-phenyllactic acid (PLA) by lactate dehydrogenase[1].

Optal

C3H8O (60.0575)

D - Dermatologicals > D08 - Antiseptics and disinfectants > D08A - Antiseptics and disinfectants C - Cardiovascular system > C10 - Lipid modifying agents > C10A - Lipid modifying agents, plain

FR-1294

C7H6O4 (154.0266)

D064449 - Sequestering Agents > D002614 - Chelating Agents > D007502 - Iron Chelating Agents Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion. Pyrocatechuic acid is a normal human benzoic acid metabolite found in plasma, and has increased levels after aspirin ingestion.

3,4-Dihydroxy-5-methoxybenzoic acid

C8H8O5 (184.0372)

Present in hydrolysed soy protein and oak aged wines and brandies. 3,4-Dihydroxy-5-methoxybenzoic acid is found in alcoholic beverages and pulses. 3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2]. 3-O-Methylgallic acid (3,4-Dihydroxy-5-methoxybenzoic acid) is an anthocyanin metabolite and has potent antioxidant capacity. 3-O-methylgallic acid inhibits Caco-2 cell proliferation with an IC50 value of 24.1 μM. 3-O-methylgallic acid also induces cell apoptosis and has anti-cancer effects[1][2].

2-Butanone

C4H8O (72.0575)

A dialkyl ketone that is a four-carbon ketone carrying a single keto- group at position C-2. Butanone, also known as methyl ethyl ketone or mek, is a member of the class of compounds known as ketones. Ketones are organic compounds in which a carbonyl group is bonded to two carbon atoms R2C=O (neither R may be a hydrogen atom). Ketones that have one or more alpha-hydrogen atoms undergo keto-enol tautomerization, the tautomer being an enol. Thus, butanone is considered to be an oxygenated hydrocarbon lipid molecule. Butanone is soluble (in water) and an extremely weak acidic compound (based on its pKa). Butanone is an acetone, camphor, and ethereal tasting compound and can be found in a number of food items such as arctic blackberry, onion-family vegetables, sweet orange, and devilfish, which makes butanone a potential biomarker for the consumption of these food products. Butanone can be found primarily in blood, feces, saliva, and urine, as well as in human pancreas and stratum corneum tissues. Moreover, butanone is found to be associated with alcoholism. Butanone is a non-carcinogenic (not listed by IARC) potentially toxic compound.

fusel oil

C5H12O (88.0888)

2-Pentanone

C5H10O (86.0732)

4-Methylbenzoic acid

C8H8O2 (136.0524)

p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc. p-Toluic acid (4-Methylbenzoic acid) is a substituted?benzoic acid?and can be used as an intermediate for the synthesis of para-aminomethylbenzoic acid (PAMBA), p-tolunitrile, etc.

Ribonic acid

C5H10O6 (166.0477)

The D-enantiomer ribonic acid.

Aloinoside A

C27H32O13 (564.1843)

2-Butanol

C4H10O (74.0732)

β-Hydroxybutyric acid

C4H8O3 (104.0473)

A straight-chain 3-hydroxy monocarboxylic acid comprising a butyric acid core with a single hydroxy substituent in the 3- position; a ketone body whose levels are raised during ketosis, used as an energy source by the brain during fasting in humans. Also used to synthesise biodegradable plastics. 3-Hydroxybutyric acid (β-Hydroxybutyric acid) is a metabolite that is elevated in type I diabetes. 3-Hydroxybutyric acid can modulate the properties of membrane lipids[1]. 3-Hydroxybutyric acid (β-Hydroxybutyric acid) is a metabolite that is elevated in type I diabetes. 3-Hydroxybutyric acid can modulate the properties of membrane lipids[1].

P-Menth-1-en-9-al

C10H16O (152.1201)

7-hydroxy-5-methyl-2-(2-oxopropyl)-8-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]chromen-4-one

C19H22O9 (394.1264)

nonadec-2-enoic acid

C19H36O2 (296.2715)

Henicosanoic acid

C21H42O2 (326.3185)

A long-chain fatty acid that is henicosane in which one of the methyl groups has been oxidised to give the corresponding carboxylic acid.

hexan-3-ol

C6H14O (102.1045)

A hexanol in which the hydroxy group is at position 3.

(2s,3r,4r,5s,6r)-2-[(9r)-4,5-dihydroxy-2-(hydroxymethyl)-9h-xanthen-9-yl]-6-(hydroxymethyl)oxane-3,4,5-triol

C20H22O9 (406.1264)

(10s)-1,8-dihydroxy-3-(hydroxymethyl)-10-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-10h-anthracen-9-one

C21H22O9 (418.1264)

(2s)-2-amino-4-{[(1r)-1-(carboxymethyl-c-hydroxycarbonimidoyl)-2-sulfanylethyl]-c-hydroxycarbonimidoyl}butanoic acid

C10H17N3O6S (307.0838)

2-[4,5-dihydroxy-2-(hydroxymethyl)-9h-xanthen-9-yl]-6-(hydroxymethyl)oxane-3,4,5-triol

C20H22O9 (406.1264)

3-(4-hydroxy-2-oxo-5h-imidazol-1-yl)propanoic acid

C6H8N2O4 (172.0484)

2-(2-methylpropyl)bicyclo[2.2.1]heptane

C11H20 (152.1565)

2-isooctanone

C8H16O (128.1201)

1-p-menthen-9-al

C10H16O (152.1201)

6-(4-hydroxy-2-methyl-6-{[(2s,3r,4s,5s,6s)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}phenyl)-4-methoxypyran-2-one

C19H22O10 (410.1213)

(2s,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-2-[7-methoxy-5-methyl-4-oxo-2-(2-oxopropyl)chromen-8-yl]oxan-3-yl (2e)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate

C30H32O12 (584.1894)

carvomethene

C10H18 (138.1408)

(6r)-6-[(1r,3as,3br,9as,9bs,11ar)-9a,11a-dimethyl-tetradecahydro-1h-cyclopenta[a]phenanthren-1-yl]-2-methylheptan-1-ol

C27H48O (388.3705)

(10r)-1,8-dihydroxy-3-(hydroxymethyl)-10-[(2s,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-10h-anthracen-9-one

C21H22O9 (418.1264)

(2s,3r,4s,5s,6r)-4,5-dihydroxy-6-(hydroxymethyl)-2-[7-methoxy-5-methyl-4-oxo-2-(2-oxopropyl)chromen-8-yl]oxan-3-yl (2e)-3-(4-hydroxyphenyl)prop-2-enoate

C29H30O11 (554.1788)

7-methyloctan-4-ol

C9H20O (144.1514)

4,5-dihydroxy-6-(hydroxymethyl)-2-[7-methoxy-5-methyl-4-oxo-2-(2-oxopropyl)chromen-8-yl]oxan-3-yl 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate

C30H32O12 (584.1894)