Exact Mass: 351.19803740000003

Origin: Plant; SubCategory_DNP: Alkaloids derived from ornithine, Pyrrolizidine alkaloids relative retention time with respect to 9-anthracene Carboxylic Acid is 0.363 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.358 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.361 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2325 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 177 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 117 INTERNAL_ID 147; CONFIDENCE Reference Standard (Level 1) CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 147 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 137 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 157 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 167 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 127 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 107 D000970 - Antineoplastic Agents Retrorsine is a naturally occurring toxic pyrrolizidine alkaloid. Retrorsine can bind with DNA and inhibits the proliferative capacity of hepatocytes. Retrorsine can be used for the research of hepatocellular injury[1][2]. Retrorsine is a naturally occurring toxic pyrrolizidine alkaloid. Retrorsine can bind with DNA and inhibits the proliferative capacity of hepatocytes. Retrorsine can be used for the research of hepatocellular injury[1][2].

trans-zeatin riboside

(2R,3R,4S,5R)-2-(6-{[(2E)-4-hydroxy-3-methylbut-2-en-1-yl]amino}-9H-purin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol

Trans-zeatin riboside, also known as (E)-N-(4-hydroxy-3-methyl-2-butenyl)adenosine or 9-beta-D-ribofuranosyl-trans-zeatin, is a member of the class of compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety. Trans-zeatin riboside is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). Trans-zeatin riboside can be found in a number of food items such as winter squash, plains prickly pear, dill, and common buckwheat, which makes trans-zeatin riboside a potential biomarker for the consumption of these food products. D006133 - Growth Substances > D010937 - Plant Growth Regulators > D003583 - Cytokinins Acquisition and generation of the data is financially supported in part by CREST/JST. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits.

Jacobine

INTERNAL_ID 2254; CONFIDENCE Reference Standard (Level 1) CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2254 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 115 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 145 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 175 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 155 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 125 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 165 INTERNAL_ID 135; CONFIDENCE Reference Standard (Level 1) CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 135 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 105

Senecionine N-oxide

Integerrimine N-oxide

CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 2301 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 146 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 176 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 116 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 136 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 166 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 156 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 106 CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 126 Senecionine n-oxide is the primary product of pyrrolizidine alkaloid biosynthesis in root cultures of Senecio vulgaris. Senecionine N-oxide has anti-cancer activity[1][2].

Tryprostatin B

(3S-trans)-Hexahydro-3-[[2-(3-methyl-2-butenyl)-1H-indol-3-yl]methyl]-pyrrolo[1,2-a]pyrazine-1,4-dione

A cyclic dipeptide that is brevianamide F (cyclo-L-Trp-L-Pro) substituted at position 2 on the indole ring by a prenyl group. CONFIDENCE Penicillium amphipolaria

O-beta-D-Xyloxylzeatin

O-beta-D-Xylosylzeatin; O-beta-D-Xyloxylzeatin

C19H29NO5 (351.20456240000004)

4,21-dehydrogeissoschizine

1H-Indolo[2,3-a]quinolizin-5-ium, 3-ethylidene-2,3,6,7,12,12b-hexahydro-2-[1-(hydroxymethylene)-2-methoxy-2-oxoethyl]-, [2S-[2α(E),3E,12bβ]]-

C21H23N2O3+ (351.1708588)

An indole alkaloid that is the enol tautomer of geissoschizine, which is also dehydrogenated at the 4,21-position. 1H-Indolo[2,3-a]quinolizin-5-ium, 3-ethylidene-2,3,6,7,12,12b-hexahydro-2-[1-(hydroxymethylene)-2-methoxy-2-oxoethyl]-, [2S-[2α(E),3E,12bβ]]-. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=73385-56-5 (retrieved 2024-07-04) (CAS RN: 73385-56-5). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Dipivefrin

2-[(2,2-dimethylpropanoyl)oxy]-5-[1-hydroxy-2-(methylamino)ethyl]phenyl 2,2-dimethylpropanoate

Dipivefrin is only found in individuals that have used or taken this drug. It is a prodrug of adrenaline, which is used to treat glaucoma. It is available as ophthalmic solution (eye drops). Dipivefrin is a prodrug with little or no pharmacologically activity until it is hydrolyzed into epinephrine inside the human eye. The liberated epinephrine, an adrenergic agonist, appears to exert its action by stimulating α- and/or β₂-adrenergic receptors, leading to a decrease in aqueous production and an enhancement of outflow facility. The dipivefrin prodrug delivery system is a more efficient way of delivering the therapeutic effects of epinephrine, with fewer side effects than are associated with conventional epinephrine therapy. S - Sensory organs > S01 - Ophthalmologicals > S01E - Antiglaucoma preparations and miotics > S01EA - Sympathomimetics in glaucoma therapy D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents > D000322 - Adrenergic Agonists C78283 - Agent Affecting Organs of Special Senses > C29705 - Anti-glaucoma Agent

Pirenzepine

2-[2-(4-methylpiperazin-1-yl)acetyl]-2,4,9-triazatricyclo[9.4.0.0³,⁸]pentadeca-1(15),3(8),4,6,11,13-hexaen-10-one

C19H21N5O2 (351.1695166)

An antimuscarinic agent that inhibits gastric secretion at lower doses than are required to affect gastrointestinal motility, salivary, central nervous system, cardiovascular, ocular, and urinary function. It promotes the healing of duodenal ulcers and due to its cytoprotective action is beneficial in the prevention of duodenal ulcer recurrence. It also potentiates the effect of other antiulcer agents such as cimetidine and ranitidine. It is generally well tolerated by patients. [PubChem] A - Alimentary tract and metabolism > A02 - Drugs for acid related disorders > A02B - Drugs for peptic ulcer and gastro-oesophageal reflux disease (gord) C78272 - Agent Affecting Nervous System > C66880 - Anticholinergic Agent > C29704 - Antimuscarinic Agent D018377 - Neurotransmitter Agents > D018678 - Cholinergic Agents > D018680 - Cholinergic Antagonists D005765 - Gastrointestinal Agents > D000897 - Anti-Ulcer Agents

Anacrotine

MS000021518

Angularine

C22H25NO3 (351.18343400000003)

Aniflorine

Pyrrolo[2,1-b]quinazolin-9(1H)-one, 3-[2-(dimethylamino)phenyl]-2,3-dihydro-3-hydroxy-5-methoxy-

C20H21N3O3 (351.1582836)

4,21-Dehydrocorynantheine aldehyde

C21H23N2O3+ (351.1708588)

Tamibarotene

4-((5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)carbamoyl)benzoic acid

Tamibarotene is only found in individuals that have used or taken this drug. It is a novel synthetic retinoid for acute promyelocytic leukaemia (APL). Tamibarotene is currently approved in Japan for treatment of recurrent APL, and is undergoing clinical trials in the United States.Tamibarotene is a specific agonist for retinoic acid receptor alpha/beta with possible binding to retinoid X receptors (RXR). C274 - Antineoplastic Agent > C2122 - Cell Differentiating Agent > C1934 - Differentiation Inducer C274 - Antineoplastic Agent > C163758 - Targeted Therapy Agent > C804 - Retinoic Acid Agent C308 - Immunotherapeutic Agent > C129820 - Antineoplastic Immunomodulating Agent Same as: D01418

4-{[(5,5,8,8-Tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)carbonyl]amino}benzoic acid

C22H25NO3 (351.18343400000003)

CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10139; ORIGINAL_PRECURSOR_SCAN_NO 10138 INTERNAL_ID 333; CONFIDENCE standard compound; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10139; ORIGINAL_PRECURSOR_SCAN_NO 10138 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10159; ORIGINAL_PRECURSOR_SCAN_NO 10156 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10167; ORIGINAL_PRECURSOR_SCAN_NO 10165 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10197; ORIGINAL_PRECURSOR_SCAN_NO 10194 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10187; ORIGINAL_PRECURSOR_SCAN_NO 10186 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 10123; ORIGINAL_PRECURSOR_SCAN_NO 10122 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5493; ORIGINAL_PRECURSOR_SCAN_NO 5489 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5465; ORIGINAL_PRECURSOR_SCAN_NO 5461 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5482; ORIGINAL_PRECURSOR_SCAN_NO 5480 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5469; ORIGINAL_PRECURSOR_SCAN_NO 5467 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5500; ORIGINAL_PRECURSOR_SCAN_NO 5495 CONFIDENCE standard compound; INTERNAL_ID 333; DATASET 20200303_ENTACT_RP_MIX505; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5570; ORIGINAL_PRECURSOR_SCAN_NO 5568 D009676 - Noxae > D013723 - Teratogens D000970 - Antineoplastic Agents

deoxybrevianamide E

L-Prolyl-2-(1,1-dimethylallyl)-L-tryptophan anhydride

A cyclic dipeptide that is brevianamide F (cyclo-L-Trp-L-Pro) substituted at position 2 on the indole ring by a 1,1-dimethylallyl group.

cis-zeatin riboside

Usaramine

(15E)-12,18-Dihydroxysenecionan-11,16-dione

Usaramine is a pyrrolizidine alkaloid isolated from seeds of Crolatalaria pallida. Usaramine demonstrates a highlighted antibiofilm activity against Staphylococcus epidermidis by reducing more than 50\\% of biofilm formation without killing the bacteria[1]. Usaramine is a pyrrolizidine alkaloid isolated from seeds of Crolatalaria pallida. Usaramine demonstrates a highlighted antibiofilm activity against Staphylococcus epidermidis by reducing more than 50\% of biofilm formation without killing the bacteria[1].

ribosylzeatin

(3R,4S,5R)-2-(((E)-4-((7H-purin-6-yl)amino)-2-methylbut-2-en-1-yl)oxy)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol;trans-Zeatinriboside

9-ribosyl-trans-zeatin is a 9-ribosylzeatin having trans-zeatin as the nucleobase. It has a role as a plant metabolite and a cytokinin. It is a nucleoside analogue and a 9-ribosylzeatin. It is functionally related to an adenosine. Zeatin riboside is a natural product found in Rhodococcus fascians, Pseudomonas syringae, and other organisms with data available. D006133 - Growth Substances > D010937 - Plant Growth Regulators > D003583 - Cytokinins A 9-ribosylzeatin having trans-zeatin as the nucleobase. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits.

9-(beta-D-Ribofuranosyl)zeatin

2-(6-{[(2E)-4-hydroxy-3-methylbut-2-en-1-yl]amino}-9H-purin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol

C22H25NO3 (351.18343400000003)

9-(beta-D-Ribofuranosyl)-(Z)-Zeatin is found in alfalfa. Zeatin is a plant hormone derived from the purine adenine. It is a member of the plant growth hormone family known as cytokinins. Zeatin was first discovered in immature corn kernels from the genus Zea. Zeatin and derivatives were discovered to be the primary active ingredient in coconut milk, which has long been known to actively induce plant growth. As in the case of kinetin, zeatin has also been reported to have several in vitro anti-aging effects on human skin fibroblasts.(Wikipedia). Isolated from many plants. (E)-Ribosylzeatin is found in many foods, some of which are cauliflower, chicory, chayote, and wild carrot. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits. trans-Zeatinriboside is a type of cytokinin precursor, acts as a major long-distance signalling form in xylem vessels, regulates leaf size and meristem activity-related traits.

Marmeline

(Z,2Z)-N-(2-hydroxy-2-{4-[(3-methylbut-2-en-1-yl)oxy]phenyl}ethyl)-3-phenylpropa-2-enimidic acid

Marmeline is found in fruits. Marmeline is an alkaloid from the leaves and unripe fruits of Aegle marmelos (bael

Phenylalanyltryptophan

(2S)-2-[(2S)-2-amino-3-phenylpropanamido]-3-(1H-indol-3-yl)propanoic acid

C20H21N3O3 (351.1582836)

Phenylalanyltryptophan is a dipeptide composed of phenylalanine and tryptophan. It is an incomplete breakdown product of protein digestion or protein catabolism. Dipeptides are organic compounds containing a sequence of exactly two alpha-amino acids joined by a peptide bond. Some dipeptides are known to have physiological or cell-signalling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. H-Phe-Trp-OH (Phenylalanyltryptophan) is an endogenous metabolite[1]. H-Phe-Trp-OH (Phenylalanyltryptophan) is an endogenous metabolite[1].

Tryptophyl-Phenylalanine

2-{[2-amino-1-hydroxy-3-(1H-indol-3-yl)propylidene]amino}-3-phenylpropanoate

C20H21N3O3 (351.1582836)

Tryptophyl-Phenylalanine is a dipeptide composed of tryptophan and phenylalanine. It is an incomplete breakdown product of protein digestion or protein catabolism. Some dipeptides are known to have physiological or cell-signaling effects although most are simply short-lived intermediates on their way to specific amino acid degradation pathways following further proteolysis. This dipeptide has not yet been identified in human tissues or biofluids and so it is classified as an Expected metabolite.

Sphingosine 1-phosphate (d16:1-P)

{[(2S,3R,4E)-2-amino-3-hydroxyhexadec-4-en-1-yl]oxy}phosphonic acid

C16H34NO5P (351.2174484)

Sphingosine 1-phosphate (d16:1-P) is a Sphingosine-1-phosphate. Sphingosine-1-phosphate is a signaling sphingolipid. It is also referred to as a bioactive lipid mediator. Sphingolipids at large form a class of lipids characterized by a particular aliphatic aminoalcohol, which is sphingosine. (Wikipedia)

Trideca-3,6,9-trienoylcarnitine

3-(trideca-3,6,9-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-3,6,9-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-3,6,9-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-3,6,9-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-3,6,9-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-6,8,10-trienoylcarnitine

3-(trideca-6,8,10-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-6,8,10-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-6,8,10-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-6,8,10-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-6,8,10-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-7,9,11-trienoylcarnitine

3-(trideca-7,9,11-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-7,9,11-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-7,9,11-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-7,9,11-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-7,9,11-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-3,5,7-trienoylcarnitine

3-(trideca-3,5,7-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-3,5,7-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-3,5,7-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-3,5,7-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-3,5,7-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-5,7,9-trienoylcarnitine

3-(trideca-5,7,9-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-5,7,9-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-5,7,9-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-5,7,9-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-5,7,9-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

(3E,5E,9E)-Trideca-3,5,9-trienoylcarnitine

3-(trideca-3,5,9-trienoyloxy)-4-(trimethylazaniumyl)butanoate

(3E,5E,9E)-Trideca-3,5,9-trienoylcarnitine is an acylcarnitine. More specifically, it is an (3E,5E,9E)-trideca-3,5,9-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. (3E,5E,9E)-Trideca-3,5,9-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine (3E,5E,9E)-Trideca-3,5,9-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-4,6,8-trienoylcarnitine

3-(trideca-4,6,8-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-4,6,8-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-4,6,8-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-4,6,8-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-4,6,8-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-4,7,10-trienoylcarnitine

3-(trideca-4,7,10-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-4,7,10-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-4,7,10-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-4,7,10-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-4,7,10-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-2,5,8-trienoylcarnitine

3-(trideca-2,5,8-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-2,5,8-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-2,5,8-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-2,5,8-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-2,5,8-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-2,4,6-trienoylcarnitine

3-(trideca-2,4,6-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-2,4,6-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-2,4,6-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-2,4,6-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-2,4,6-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

Trideca-5,8,11-trienoylcarnitine

3-(trideca-5,8,11-trienoyloxy)-4-(trimethylazaniumyl)butanoate

Trideca-5,8,11-trienoylcarnitine is an acylcarnitine. More specifically, it is an trideca-5,8,11-trienoic acid ester of carnitine. Acylcarnitines were first discovered more than 70 year ago (PMID: 13825279). It is believed that there are more than 1000 types of acylcarnitines in the human body. The general role of acylcarnitines is to transport acyl-groups (organic acids and fatty acids) from the cytoplasm into the mitochondria so that they can be broken down to produce energy. This process is known as beta-oxidation. According to a recent review [Dambrova et al. 2021, Physiological Reviews], acylcarnitines (ACs) can be classified into 9 different categories depending on the type and size of their acyl-group: 1) short-chain ACs; 2) medium-chain ACs; 3) long-chain ACs; 4) very long-chain ACs; 5) hydroxy ACs; 6) branched chain ACs; 7) unsaturated ACs; 8) dicarboxylic ACs and 9) miscellaneous ACs. Short-chain ACs have acyl-groups with two to five carbons (C2-C5), medium-chain ACs have acyl-groups with six to thirteen carbons (C6-C13), long-chain ACs have acyl-groups with fourteen to twenty once carbons (C14-C21) and very long-chain ACs have acyl groups with more than 22 carbons. Trideca-5,8,11-trienoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine Trideca-5,8,11-trienoylcarnitine is generally formed through esterification with long-chain fatty acids obtained from the diet. The main function of most long-chain acylcarnitines is to ensure long chain fatty acid transport into the mitochondria (PMID: 22804748). Altered levels of long-chain acylcarnitines can serve as useful markers for inherited disorders of long-chain fatty acid metabolism. Carnitine palmitoyltransferase I (CPT I, EC:2.3.1.21) is involved in the synthesis of long-chain acylcarnitines (more than C12) on the mitochondrial outer membrane. Elevated serum/plasma levels of long-chain acylcarnitines are not only markers for incomplete FA oxidation but also are indicators of altered carbohydrate and lipid metabolism. High serum concentrations of long-chain acylcarnitines in the postprandial or fed state are markers of insulin resistance and arise from insulins inability to inhibit CPT-1-dependent fatty acid metabolism in muscles and the heart (PMID: 19073774). Increased intracellular content of long-chain acylcarnitines is thought to serve as a feedback inhibition mechanism of insulin action (PMID: 23258903). In healthy subjects, increased concentrations of insulin effectively inhibits long-chain acylcarnitine production. Several studies have also found increased levels of circulating long-chain acylcarnitines in chronic heart failure patients (PMID: 26796394). The study of acylcarnitines is an active area of research and it is likely that many novel acylcarnitines will be discovered in the coming years. It is also likely that many novel roles in health and disease will be uncovered. An excellent review of the current state of knowledge for acylcarnitines is available at [Dambrova et al. 2021, Physiological Reviews].

(1R,4E,6S,7S,17R)-4-Ethylidene-7-hydroxy-7-(hydroxymethyl)-6-methyl-2,9-dioxa-14-azatricyclo[9.5.1.014,17]heptadec-11-ene-3,8-dione

(2R,3S,5R)-2-[6-[[(1S,2S)-2-Hydroxycyclopentyl]amino]-9-purinyl]-5-(hydroxymethyl)oxolane-3,4-diol

Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylpropyl)-

2-(2H-1,2,3-benzotriazol-2-yl)-4,6-bis(2-methylbutan-2-yl)phenol

C22H29N3O (351.2310504)

6-((3-Cyclobutyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)oxy)-N-methyl-3-pyridinecarboxamide

6-[(3-cyclobutyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)oxy]-N-methylpyridine-3-carboxamide

GSK189254A (GSK189254 free base) is a novel, potent and selective histamine H3 receptor antagonist with pKi values of 9.59-9.90 and 8.51-9.17 for human and rat H3, respectively.

2-Amino-6-[2-[3-(3-methoxyphenyl)phenyl]ethyl]-3,6-dimethyl-5H-pyrimidin-4-one

2-amino-6-(2-{3-methoxy-[1,1-biphenyl]-3-yl}ethyl)-3,6-dimethyl-3,4,5,6-tetrahydropyrimidin-4-one

C18H25NO4S (351.15042100000005)

Estradiol sulfamate

(17-Hydroxy-13-methyl-6,7,8,9,11,12,14,15,16,17-decahydrocyclopenta[a]phenanthren-3-yl) sulfamate

N-[(6R)-6-(Dimethylamino)-6,7,8,9-tetrahydro-5H-carbazol-3-yl]-4-fluorobenzamide

C21H22FN3O (351.1746814)

4-Fluoro-N-[3-(1-methylpiperidin-4-yl)-1H-indol-5-yl]benzamide

4-Fluoro-N-(3-(1-methyl-4-piperidinyl)-1H-indol-5-yl)benzamide

C21H22FN3O (351.1746814)

Pyrrolifene

1,2-Diphenyl-3-[(pyrrolidin-1-yl)methyl]butan-2-yl acetic acid

C23H29NO2 (351.2198174)

Senecionine N-oxide

4-ethylidene-7-hydroxy-6,7-dimethyl-3,8-dioxo-2,9-dioxa-14-azatricyclo[9.5.1.0¹⁴,¹⁷]heptadec-11-en-14-ium-14-olate

C19H29NO5 (351.20456240000004)

Benzeneacetic acid, 4-(2-(diethylamino)-2-oxoethoxy)-3-ethoxy-, propyl ester

N-[1-[4-[(4-Pyrimidin-2-ylpiperazin-1-yl)methyl]phenyl]cyclopropyl]acetamide

N-[1-(4-{[4-(pyrimidin-2-yl)piperazin-1-yl]methyl}phenyl)cyclopropyl]ethanimidate

C20H25N5O (351.2059)

cis-zeatin riboside

2-(6-{[(2Z)-4-hydroxy-3-methylbut-2-en-1-yl]amino}-9H-purin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol

Cis-zeatin riboside is a member of the class of compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety. Cis-zeatin riboside is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). Cis-zeatin riboside can be found in a number of food items such as american pokeweed, sesbania flower, moth bean, and common chokecherry, which makes cis-zeatin riboside a potential biomarker for the consumption of these food products.

1ST14176

(5R,6R,9a1R,14aR,Z)-3-ethylidene-6-hydroxy-5,6-dimethyl-2,7-dioxo-2,3,4,5,6,7,9,9a1,11,13,14,14a-dodecahydro-12H-[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine 12-oxide

Senecionine N-oxide is a tertiary amine oxide. It is functionally related to a senecionine. Senecionine N-oxide is a natural product found in Dorobaea pimpinellifolia, Senecio gallicus, and other organisms with data available. Senecionine n-oxide is the primary product of pyrrolizidine alkaloid biosynthesis in root cultures of Senecio vulgaris. Senecionine N-oxide has anti-cancer activity[1][2].

Ursamine

[1,6]Dioxacyclododecino[2,3,4-gh]pyrrolizine-2,7-dione, 3-ethylidene-3,4,5,6,9,11,13,14,14a,14b-decahydro-6-hydroxy-6-(hydroxymethyl)-5-methyl-, (3E,5R,6S,14aR,14bR)-

LSM-2938 is a macrolide. Usaramine is a natural product found in Senecio malacitanus, Senecio ceratophylloides, and other organisms with data available. D000970 - Antineoplastic Agents Usaramine is a pyrrolizidine alkaloid isolated from seeds of Crolatalaria pallida. Usaramine demonstrates a highlighted antibiofilm activity against Staphylococcus epidermidis by reducing more than 50\\% of biofilm formation without killing the bacteria[1]. Usaramine is a pyrrolizidine alkaloid isolated from seeds of Crolatalaria pallida. Usaramine demonstrates a highlighted antibiofilm activity against Staphylococcus epidermidis by reducing more than 50\% of biofilm formation without killing the bacteria[1].

Usaramin

[1,6]Dioxacyclododecino[2,3,4-gh]pyrrolizine-2,7-dione, 3-ethylidene-3,4,5,6,9,11,13,14,14a,14b-decahydro-6-hydroxy-6-(hydroxymethyl)-5-methyl-, (3E,5R,6S,14aR,14bR)-