Exact Mass: 138.0405
Exact Mass Matches: 138.0405
Found 251 metabolites which its exact mass value is equals to given mass value 138.0405,
within given mass tolerance error 0.01 dalton. Try search metabolite list with more accurate mass tolerance error
0.001 dalton.
Salicylic acid
Salicylic acid is a monohydroxybenzoic acid that is benzoic acid with a hydroxy group at the ortho position. It is obtained from the bark of the white willow and wintergreen leaves. It has a role as an antiinfective agent, an antifungal agent, a keratolytic drug, an EC 1.11.1.11 (L-ascorbate peroxidase) inhibitor, a plant metabolite, an algal metabolite and a plant hormone. It is a conjugate acid of a salicylate. It is a colorless solid, it is a precursor to and a metabolite of aspirin (acetylsalicylic acid). It is a plant hormone. The name is from Latin salix for willow tree. It is an ingredient in some anti-acne products. Salts and esters of salicylic acid are known as salicylates. Salicylic acid modulates COX1 enzymatic activity to decrease the formation of pro-inflammatory prostaglandins. Salicylate may competitively inhibit prostaglandin formation. Salicylates antirheumatic (nonsteroidal anti-inflammatory) actions are a result of its analgesic and anti-inflammatory mechanisms. Salicylic acid works by causing the cells of the epidermis to slough off more readily, preventing pores from clogging up, and allowing room for new cell growth. Salicylic acid inhibits the oxidation of uridine-5-diphosphoglucose (UDPG) competitively with nicotinamide adenosine dinucleotide and noncompetitively with UDPG. It also competitively inhibits the transferring of glucuronyl group of uridine-5-phosphoglucuronic acid to the phenolic acceptor. The wound-healing retardation action of salicylates is probably due mainly to its inhibitory action on mucopolysaccharide synthesis. Salicylic acid is biosynthesized from the amino acid phenylalanine. In Arabidopsis thaliana, it can be synthesized via a phenylalanine-independent pathway. Salicylic acid is an odorless white to light tan solid. Sinks and mixes slowly with water. (USCG, 1999) Salicylic acid is a monohydroxybenzoic acid that is benzoic acid with a hydroxy group at the ortho position. It is obtained from the bark of the white willow and wintergreen leaves. It has a role as an antiinfective agent, an antifungal agent, a keratolytic drug, an EC 1.11.1.11 (L-ascorbate peroxidase) inhibitor, a plant metabolite, an algal metabolite and a plant hormone. It is a conjugate acid of a salicylate. A compound obtained from the bark of the white willow and wintergreen leaves, and also prepared synthetically. It has bacteriostatic, fungicidal, and keratolytic actions. Its salts, the salicylates, are used as analgesics. Salicylic acid is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Salicylic Acid is a beta hydroxy acid that occurs as a natural compound in plants. It has direct activity as an anti-inflammatory agent and acts as a topical antibacterial agent due to its ability to promote exfoliation. A compound obtained from the bark of the white willow and wintergreen leaves, and also prepared synthetically. It has bacteriostatic, fungicidal, and keratolytic actions. Its salts, the salicylates, are used as analgesics. A compound obtained from the bark of the white willow and wintergreen leaves. It has bacteriostatic, fungicidal, and keratolytic actions. See also: Benzoic Acid (has active moiety); Methyl Salicylate (active moiety of); Benzyl salicylate (is active moiety of) ... View More ... A monohydroxybenzoic acid that is benzoic acid with a hydroxy group at the ortho position. It is obtained from the bark of the white willow and wintergreen leaves. Salicylic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=69-72-7 (retrieved 2024-06-29) (CAS RN: 69-72-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1]. Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1].
4-Hydroxybenzoic acid
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 Açaí oil, obtained from the fruit of the açaí 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
Gentisate aldehyde
Gentisate aldehyde is a substrate of the enzyme aldehyde oxidase 1 [EC:1.2.3.1] in Valine, leucine and isoleucine degradation, Tyrosine metabolism, Tryptophan metabolism, Vitamin B6 metabolism and Nicotinate and nicotinamide metabolism. (KEGG) [HMDB] Gentisate aldehyde is a substrate of the enzyme aldehyde oxidase 1 [EC:1.2.3.1] in Valine, leucine and isoleucine degradation, Tyrosine metabolism, Tryptophan metabolism, Vitamin B6 metabolism and Nicotinate and nicotinamide metabolism. (KEGG). 2,5-Dihydroxybenzaldehyde (Gentisaldehyde) is a naturally occurring antimicrobial that inhibits the growth of Mycobacterium avium subsp. paratuberculosis. 2,5-Dihydroxybenzaldehyde is active against S. aureus strains with a MIC50 of 500 mg/L[1][2].
3-Hydroxybenzoic acid
3-Hydroxybenzoic acid, also known as 3-hydroxybenzoate or 3-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. 3-Hydroxybenzoic acid exists in all living organisms, ranging from bacteria to humans. Outside of the human body, 3-hydroxybenzoic acid is found, on average, in the highest concentration in american cranberries and beers. 3-hydroxybenzoic acid has also been detected, but not quantified in a few different foods, such as bilberries, citrus, and corns. As well, 3-Hydroxybenzoic Acid can be found in the pineapple fruit. It can also be formed by a Pseudomonas species from 3-Chlorobenzoic acid. 3-Hydroxybenzoic acid is a monohydroxybenzoic acid. 3-Hydroxybenzoic acid can be obtained by the alkali fusion of 3-sulfobenzoic acid between 210-220 °C. 3-Hydroxybenzoic acid is a component of castoreum, the exudate from the castor sacs of the mature North American beaver (Castor canadensis) and the European beaver (Castor fiber), used in perfumery. Present in fruits. Isolated from Citrus paradisi (grapefruit) CONFIDENCE standard compound; ML_ID 13 KEIO_ID H019 3-Hydroxybenzoic acid is an endogenous metabolite. 3-Hydroxybenzoic acid is an endogenous metabolite.
Urocanic acid
Urocanic acid (CAS: 104-98-3) is a breakdown (deamination) product of histidine. In the liver, urocanic acid is an intermediate in the conversion of histidine to glutamic acid, whereas, in the epidermis, it accumulates and may be both a UV protectant and an immunoregulator. Urocanic acid (UA) exists as a trans isomer (t-UA, approximately 30 mg/cm2) in the uppermost layer of the skin (stratum corneum). t-UA is formed as the cells of the second layer of the skin become metabolically inactive. During this process, proteins and membranes degrade, histidine is released, and histidase (histidine ammonia lyase) catalyzes the deamination of histidine to form t-UA. t-UA accumulates in the epidermis until removal by either the monthly skin renewal cycle or sweat. Upon absorption of UV light, the naturally occurring t-UA isomerizes to its cis form, c-UA. Because DNA lesions (e.g., pyrimidine dimers) in the lower epidermis can result from UV-B absorption, initial research proposed that t-UA acted as a natural sunscreen absorbing UV-B in the stratum corneum before the damaging rays could penetrate into lower epidermal zones. Researchers have found that c-UA also suppresses contact hypersensitivity and delayed hypersensitivity, reduces the Langerhans cell count in the epidermis, prolongs skin-graft survival time, and affects natural killer cell activity. (E)-Urocanic acid is found in mushrooms. It has been isolated from Coprinus atramentarius (common ink cap) and Phallus impudicus (common stinkhorn). Trans-urocanic acid, also known as 4-imidazoleacrylic acid or urocanate, belongs to imidazolyl carboxylic acids and derivatives class of compounds. Those are organic compounds containing a carboxylic acid chain (of at least 2 carbon atoms) linked to an imidazole ring. Trans-urocanic acid is soluble (in water) and a weakly acidic compound (based on its pKa). Trans-urocanic acid can be found in mung bean, which makes trans-urocanic acid a potential biomarker for the consumption of this food product. Trans-urocanic acid can be found primarily in most biofluids, including sweat, feces, blood, and urine, as well as in human liver and skin tissues. Trans-urocanic acid exists in all living organisms, ranging from bacteria to humans. In humans, trans-urocanic acid is involved in the histidine metabolism. Trans-urocanic acid is also involved in a couple of metabolic disorders, which include ammonia recycling and histidinemia. Urocanic acid, produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR). Urocanic acid, produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR).
4-Nitroaniline
CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2935; ORIGINAL_PRECURSOR_SCAN_NO 2934 CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2902; ORIGINAL_PRECURSOR_SCAN_NO 2900 CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2938; ORIGINAL_PRECURSOR_SCAN_NO 2937 CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2922; ORIGINAL_PRECURSOR_SCAN_NO 2921 CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2945; ORIGINAL_PRECURSOR_SCAN_NO 2944 CONFIDENCE standard compound; INTERNAL_ID 1340; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 2892; ORIGINAL_PRECURSOR_SCAN_NO 2890 KEIO_ID N012
3,4-Dihydroxybenzaldehyde
Protocatechualdehyde, also known as rancinamycin iv or 1,2-dihydroxy-4-formylbenzene, is a member of the class of compounds known as hydroxybenzaldehydes. Hydroxybenzaldehydes are organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group. Protocatechualdehyde is soluble (in water) and a very weakly acidic compound (based on its pKa). Protocatechualdehyde is an almond, bitter, and dry tasting compound and can be found in a number of food items such as plains prickly pear, mugwort, silver linden, and cardamom, which makes protocatechualdehyde a potential biomarker for the consumption of these food products. Protocatechualdehyde can be found primarily in urine. This molecule can be used as a precursor in the vanillin synthesis by biotransformation by cell cultures of Capsicum frutescens, a type of Chili pepper. It is also found in the mushroom Phellinus linteus . 3,4-Dihydroxybenzaldehyde, also known as protocatechuic aldehyde, is a phenolic aldehyde, a compound released from cork stoppers into wine. This molecule can be used as a precursor in vanillin synthesis via biotransformation by cell cultures of Capsicum frutescens, a type of chili pepper. It is also found in the mushroom Phellinus linteus (Wikipedia). D006401 - Hematologic Agents > D000925 - Anticoagulants Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1]. Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1].
Sesamol
Sesamol is a member of benzodioxoles. Sesamol is a natural product found in Sesamum indicum with data available. See also: Sesame Oil (part of). Isolated from sesame oil. Sesamol is found in fats and oils and sesame. Sesamol is found in fats and oils. Sesamol is isolated from sesame oi D020011 - Protective Agents > D000975 - Antioxidants COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Sesamol is a constituent of sesame oil. Sesamol shows a free radical scavenging activity. Sesamol shows an IC50=5.95±0.56 μg/mL in the DPPH assay. Anti-oxidant activities[1]. Anticancer activities[2]. Sesamol is a constituent of sesame oil. Sesamol shows a free radical scavenging activity. Sesamol shows an IC50=5.95±0.56 μg/mL in the DPPH assay. Anti-oxidant activities[1]. Anticancer activities[2].
2-Aminonicotinic acid
2-Aminonicotinic acid belongs to the class of organic compounds known as pyridinecarboxylic acids. These are compounds containing a pyridine ring bearing a carboxylic acid group.
2-Methoxy-1,4-benzoquinone
2-Methoxy-1,4-benzoquinone is found in fruits. 2-Methoxy-1,4-benzoquinone is isolated from fruits of Diospyros kaki (Japanese persimmon
keratan sulfate II (core 2-linked), degradation product 1
keratan sulfate II (core 2-linked), degradation product 1, also known as 2,4-Dihydroxybenzaldehyd or beta-Resorcylaldehyde, is classified as a member of the Hydroxybenzaldehydes. Hydroxybenzaldehydes are organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group. keratan sulfate II (core 2-linked), degradation product 1 is considered to be soluble (in water) and acidic 2,4-Dihydroxybenzaldehyde is an endogenous metabolite. 2,4-Dihydroxybenzaldehyde is an endogenous metabolite.
5-Oxo-2(5H)-isoxazolepropanenitrile
5-Oxo-2(5H)-isoxazolepropanenitrile is found in pulses. 5-Oxo-2(5H)-isoxazolepropanenitrile is a constituent of Pisum sativum (peas) Constituent of Pisum sativum (peas). 5-Oxo-2(5H)-isoxazolepropanenitrile is found in pulses and common pea.
alpha-Furyl methyl diketone
alpha-Furyl methyl diketone is found in coffee and coffee products. alpha-Furyl methyl diketone is a constituent of coffee aroma. Constituent of coffee aroma. alpha-Furyl methyl diketone is found in coffee and coffee products.
Benzyl methyl sulfide
Benzyl methyl sulfide is found in animal foods. Benzyl methyl sulfide is a flavouring agent. Benzyl methyl sulfide is present in cooked por Benzyl methyl sulfide is a flavouring agent. It is found in animal foods, specifically cooked pork.
Nicotinamide N-oxide
Nicotinamide N-oxide is recognized as an in vivo metabolite of nicotinamide which is a precurser of nicotinamide-adenine dinucleotide (NAD+) in animals. The enzyme that catalyses the reduction of nicotinamide N-oxide to nicotinamide in liver is xanthine oxidase. [HMDB] Nicotinamide N-oxide is recognized as an in vivo metabolite of nicotinamide which is a precurser of nicotinamide-adenine dinucleotide (NAD+) in animals. The enzyme that catalyses the reduction of nicotinamide N-oxide to nicotinamide in liver is xanthine oxidase. Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor. Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor.
2,6-Dimethylbenzenethiol
2,6-Dimethylbenzenethiol is found in animal foods. 2,6-Dimethylbenzenethiol is present in boiled beef. 2,6-Dimethylbenzenethiol is a flavouring ingredien Present in boiled beef. Flavouring ingredient. 2,6-Dimethylbenzenethiol is found in animal foods.
(+/-)-1-Phenylethylmercaptan
(+/-)-1-Phenylethylmercaptan is used as a food additive [EAFUS] ("EAFUS: Everything Added to Food in the United States. [http://www.eafus.com/]")
2-Ethylbenzenethiol
2-Ethylbenzenethiol is a flavouring ingredient especially for instant coffee. Flavouring ingredient especies for instant coffee
Trans-urocanate
Trans-urocanate is also known as (e)-3-(Imidazol-4-yl)propenoate or trans-Urocanic acid. Trans-urocanate is considered to be soluble (in water) and acidic
3,4-Dihydroxybenzaldehyde
Protocatechualdehyde, also known as rancinamycin iv or 1,2-dihydroxy-4-formylbenzene, is a member of the class of compounds known as hydroxybenzaldehydes. Hydroxybenzaldehydes are organic aromatic compounds containing a benzene ring carrying an aldehyde group and a hydroxyl group. Protocatechualdehyde is soluble (in water) and a very weakly acidic compound (based on its pKa). Protocatechualdehyde is an almond, bitter, and dry tasting compound and can be found in a number of food items such as plains prickly pear, mugwort, silver linden, and cardamom, which makes protocatechualdehyde a potential biomarker for the consumption of these food products. Protocatechualdehyde can be found primarily in urine. This molecule can be used as a precursor in the vanillin synthesis by biotransformation by cell cultures of Capsicum frutescens, a type of Chili pepper. It is also found in the mushroom Phellinus linteus . 3,4-dihydroxybenzaldehyde is a dihydroxybenzaldehyde. Also known as protocatechuic aldehyde, protocatechualdehyde is a naturally-occuring phenolic aldehyde that is found in barley, green cavendish bananas, grapevine leaves and root of the herb S. miltiorrhiza. Protocatechualdehyde possesses antiproliferative and pro-apoptotic properties against human breast cancer cells and colorectal cancer cells by reducing the expression of pro-oncogenes β-catenin and cyclin D1. 3,4-Dihydroxybenzaldehyde is a natural product found in Visnea mocanera, Amomum subulatum, and other organisms with data available. See also: Black Cohosh (part of). 3,4-Dihydroxybenzaldehyde, also known as protocatechuic aldehyde, is a phenolic aldehyde, a compound released from cork stoppers into wine. This molecule can be used as a precursor in vanillin synthesis via biotransformation by cell cultures of Capsicum frutescens, a type of chili pepper. It is also found in the mushroom Phellinus linteus (Wikipedia). D006401 - Hematologic Agents > D000925 - Anticoagulants Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1]. Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1].
3-Hydroxybenzoicacid
A monohydroxybenzoic acid that is benzoic acid substituted by a hydroxy group at position 3. It has been isolated from Taxus baccata. It is used as an intermediate in the synthesis of plasticisers, resins, pharmaceuticals, etc. 3-Hydroxybenzoic acid is an endogenous metabolite. 3-Hydroxybenzoic acid is an endogenous metabolite.
Urocanic acid
An alpha,beta-unsaturated monocarboxylic acid that is prop-2-enoic acid substituted by a 1H-imidazol-4-yl group at position 3. It is a metabolite of hidtidine. Urocanic acid is an intermediate in the catabolism of L-histidine.; Urocanic is a breakdown (deamination) product of histidine. In the liver, urocanic acid is an intermediate in the conversion of histidine to glutamic acid, whereas in the epidermis, it accumulates and may be both a UV protectant and an immunoregulator. Urocanic acid (UA) exists as a trans isomer (t-UA, approximately 30 mg/cm2) in the uppermost layer of the skin (stratum corneum). t-UA is formed as the cells of the second layer of skin become metabolically inactive. During this process, proteins and membranes degrade, histidine is released, and histidase (histidine ammonia lyase) catalyzes the deamination of histidine to form t-UA. t-UA accumulates in the epidermis until removal by either the monthly skin renewal cycle or sweat. Upon absorption of UV light, the naturally occurring t-UA isomerizes to its cis form, c-UA. Because DNA lesions (e.g., pyrimidine dimers) in the lower epidermis can result from UV-B absorption, initial research proposed that t-UA acted as a natural sunscreen absorbing UV-B in the stratum corneum before the damaging rays could penetrate into lower epidermal zones. Researchers have found that c-UA also suppresses contact hypersensitivity and delayed hypersensitivity, reduces the Langerhans cell count in the epidermis, prolongs skin-graft survival time, and affects natural killer cell activity. Urocanic acid is found in mung bean. C308 - Immunotherapeutic Agent relative retention time with respect to 9-anthracene Carboxylic Acid is 0.055 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.054 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.053 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.052 Urocanic acid, produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR). Urocanic acid, produced in the upper layers of mammalian skin, is a major absorber of ultraviolet radiation (UVR).
4-aminonicotinic acid
An aminonicotinic acid in which the amino group is situated at position 4 of the pyridine ring.
5-Ammonionicotinate
An aminonicotinic acid in which the amino group is situated at position 5 of the pyridine ring.
2-NITROANILINE
CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3817; ORIGINAL_PRECURSOR_SCAN_NO 3816 CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3818; ORIGINAL_PRECURSOR_SCAN_NO 3817 CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3826; ORIGINAL_PRECURSOR_SCAN_NO 3825 CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3823; ORIGINAL_PRECURSOR_SCAN_NO 3822 CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3891; ORIGINAL_PRECURSOR_SCAN_NO 3890 CONFIDENCE standard compound; INTERNAL_ID 806; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3829; ORIGINAL_PRECURSOR_SCAN_NO 3828
1-Undecene-3,5,7,9-tetrayne|undec-1-ene-3,5,7,9-tetrayne|Undeca-1-en-3,5,7,9-tetrain
4-hydroxybenzoate
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.
3-Hydroxybenzoate
3-Hydroxybenzoic acid is an endogenous metabolite. 3-Hydroxybenzoic acid is an endogenous metabolite.
4-Hydroxybenzoic acid
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.
Salicylic Acid
Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1]. Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1].
protocatechuic aldehyde
Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1]. Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1].
Methyl 2-pyrazinecarboxylate
CONFIDENCE standard compound; INTERNAL_ID 8364
p-Hydroxybenzoic acid
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.
2,5-Dihydroxybenzaldehyde
A dihydroxybenzaldehyde carrying hydroxy groups at positions 2 and 5. 2,5-Dihydroxybenzaldehyde (Gentisaldehyde) is a naturally occurring antimicrobial that inhibits the growth of Mycobacterium avium subsp. paratuberculosis. 2,5-Dihydroxybenzaldehyde is active against S. aureus strains with a MIC50 of 500 mg/L[1][2].
trans-Urocanic acid
A urocanic acid in which the double bond of the carboxyethene moiety has E configuration. Isol from fungi, e.g. Coprinus atramentarius (common ink cap) and Phallus impudicus (common stinkhorn). (E)-Urocanic acid is found in mushrooms.
Nicotinamide 1-oxide
Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor. Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor.
4-(4-METHYLPIPERAZINO)-3-NITROBENZENE-CARBOXYLIC ACID
6-Aminonicotinic acid
An aminonicotinic acid in which the amino group is situated at position 6 of the pyridine ring. 6-Aminonicotinic acid is a GABAA receptor agonist with Ki value of 4.4 nM[1].
TeMozoloMide Related CoMpound A,4-diazo-4H-iMidazole-5-carboxaMide
Propanoic acid, 3-fluoro-2-(fluoromethyl)-2-methyl-
139-85-5
D006401 - Hematologic Agents > D000925 - Anticoagulants Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1]. Protocatechualdehyde (Catechaldehyde), a natural polyphenol compound isolated from the roots of radix Salviae Miltiorrhizae, is associated with a wide variety of biological activities and has been widely used in medicine as an antioxidant, anti-aging, an antibacterial and anti-inflammatory agent[1].
Sesamol
D020011 - Protective Agents > D000975 - Antioxidants COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Sesamol is a constituent of sesame oil. Sesamol shows a free radical scavenging activity. Sesamol shows an IC50=5.95±0.56 μg/mL in the DPPH assay. Anti-oxidant activities[1]. Anticancer activities[2]. Sesamol is a constituent of sesame oil. Sesamol shows a free radical scavenging activity. Sesamol shows an IC50=5.95±0.56 μg/mL in the DPPH assay. Anti-oxidant activities[1]. Anticancer activities[2].
Phenol-2-carboxylic acid
Salicylic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=69-72-7 (retrieved 2024-07-09) (CAS RN: 69-72-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1]. Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1].
b-Resorcylaldehyde
Isolated from Pinus sylvestris ( Scotch pine) needles. A polyphenol metabolite detected in biological fluids [PhenolExplorer] 2,4-Dihydroxybenzaldehyde is an endogenous metabolite. 2,4-Dihydroxybenzaldehyde is an endogenous metabolite.
Salicylate
Salicylic acid, also known as O-hydroxybenzoic acid or ionil-plus, is a member of the class of compounds known as salicylic acids. Salicylic acids are ortho-hydroxylated benzoic acids. Salicylic acid is soluble (in water) and a moderately acidic compound (based on its pKa). Salicylic acid is a faint, nutty, and phenolic tasting compound and can be found in a number of food items such as pistachio, oriental wheat, black cabbage, and bayberry, which makes salicylic acid a potential biomarker for the consumption of these food products. Salicylic acid can be found primarily in blood, feces, saliva, and urine, as well as in human liver and skin tissues. Salicylic acid exists in all living species, ranging from bacteria to humans. In humans, salicylic acid is involved in the salicylic acid action pathway. Salicylic acid is a non-carcinogenic (not listed by IARC) potentially toxic compound. Salicylic acid (from Latin salix, willow tree) is a lipophilic monohydroxybenzoic acid, a type of phenolic acid, and a beta hydroxy acid (BHA). It has the formula C7H6O3. This colorless crystalline organic acid is widely used in organic synthesis and functions as a plant hormone. It is derived from the metabolism of salicin. In addition to serving as an important active metabolite of aspirin (acetylsalicylic acid), which acts in part as a prodrug to salicylic acid, it is probably best known for its use as a key ingredient in topical anti-acne products. The salts and esters of salicylic acid are known as salicylates . Oral rat LD50: 891 mg/kg. Inhalation rat LC50: > 900 mg/m3/1hr. Irritation: skin rabbit: 500 mg/24H mild. Eye rabbit: 100 mg severe. Investigated a mutagen and reproductive effector (DrugBank). Salicylic acid directly and irreversibly inhibits the activity of both types of cyclo-oxygenases (COX-1 and COX-2) to decrease the formation of precursors of prostaglandins and thromboxanes from arachidonic acid. Salicylate may competitively inhibit prostaglandin formation. Salicylates antirheumatic (nonsteroidal anti-inflammatory) actions are a result of its analgesic and anti-inflammatory mechanisms. Salicylic acid is a key ingredient in many skin-care products for the treatment of acne, psoriasis, calluses, corns, keratosis pilaris, and warts. It works by causing the cells of the epidermis to slough off more readily, preventing pores from clogging up, and allowing room for new cell growth. Because of its effect on skin cells, salicylic acid is used in several shampoos used to treat dandruff. Salicylic acid is also used as an active ingredient in gels which remove verrucas (plantar warts). Salicylic acid inhibits the oxidation of uridine-5-diphosphoglucose (UDPG) competitively with nicotinamide adenosine dinucleotide (NAD) and noncompetitively with UDPG. It also competitively inhibits the transferring of glucuronyl group of uridine-5-phosphoglucuronic acid (UDPGA) to the phenolic acceptor. The wound-healing retardation action of salicylates is probably due mainly to its inhibitory action on mucopolysaccharide synthesis (T3DB). Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1]. Salicylic acid (2-Hydroxybenzoic acid) inhibits cyclo-oxygenase-2 (COX-2) activity independently of transcription factor (NF-κB) activation[1].
2-Aminonicotinic acid
An aminonicotinic acid in which the amino group is situated at position 2 of the pyridine ring.
Nicotinamide N-oxide
Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor. Nicotinamide N-oxide, an in vivo nicotinamide metabolite, is a potent, and selective antagonist of the CXCR2 receptor.
Cis-urocanic acid
A urocanic acid in which the double bond of the carboxyethene moiety has Z configuration. C308 - Immunotherapeutic Agent
4-hydroxybenzoic
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