Exact Mass: 501.38178860000005

Exact Mass Matches: 501.38178860000005

Found 80 metabolites which its exact mass value is equals to given mass value 501.38178860000005, within given mass tolerance error 0.05 dalton. Try search metabolite list with more accurate mass tolerance error 0.01 dalton.

(9Z,12Z,15Z,18Z,21Z)-Tetracosa-9,12,15,18,21-pentaenoylcarnitine

3-(tetracosa-9,12,15,18,21-pentaenoyloxy)-4-(trimethylazaniumyl)butanoate

C31H51NO4 (501.38178860000005)

(9Z,12Z,15Z,18Z,21Z)-Tetracosa-9,12,15,18,21-pentaenoylcarnitine is an acylcarnitine. More specifically, it is an (9Z,12Z,15Z,18Z,21Z)-tetracosa-9,12,15,18,21-pentaenoic 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. (9Z,12Z,15Z,18Z,21Z)-Tetracosa-9,12,15,18,21-pentaenoylcarnitine is therefore classified as a very-long chain AC. As a very long-chain acylcarnitine (9Z,12Z,15Z,18Z,21Z)-Tetracosa-9,12,15,18,21-pentaenoylcarnitine is generally formed in the cytoplasm from very long acyl groups synthesized by fatty acid synthases or obtained from the diet. Very-long-chain fatty acids are generally too long to be involved in mitochondrial beta-oxidation. As a result peroxisomes are the main organelle where very-long-chain fatty acids are metabolized and their acylcarnitines synthesized (PMID: 18793625). Altered levels of very long-chain acylcarnitines can serve as useful markers for inherited disorders of peroxisomal metabolism. 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].

7-[(1R,2R,3R,5S)-3,5-Dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoylcarnitine

3-({7-[3,5-dihydroxy-2-(3-hydroxyoctyl)cyclopentyl]heptanoyl}oxy)-4-(trimethylazaniumyl)butanoate

C27H51NO7 (501.3665336)

7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoylcarnitine is an acylcarnitine. More specifically, it is an 7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoic 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. 7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine 7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoylcarnitine 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].

(6S,7S,18S)-20-aza-6,10,12,18-tetramethyl-7-O-(2,6-dideoxy-3-C-methyl-beta-D-ribo-hexopyranosyl)-cycloicosa-2,4,9,12,14-pentaen-1-one|vicenistatin M

C30H47NO5 (501.3454052)

(5S,6R)-5-(dimethylamino)-6-hydroxypoly-angioic acid|Ambruticin VS-3|ambruticin VS3

C30H47NO5 (501.3454052)

Ala Lys Lys Arg

(2S)-2-[(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-aminopropanamido]hexanamido]hexanamido]-5-carbamimidamidopentanoic acid

C21H43N9O5 (501.33869880000003)

Ala Lys Arg Lys

(2S)-6-amino-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2-aminopropanamido]hexanamido]-5-carbamimidamidopentanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Ala Arg Lys Lys

(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2-aminopropanamido]-5-carbamimidamidopentanamido]hexanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Lys Ala Lys Arg

(2S)-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2,6-diaminohexanamido]propanamido]hexanamido]-5-carbamimidamidopentanoic acid

C21H43N9O5 (501.33869880000003)

Lys Ala Arg Lys

(2S)-6-amino-2-[(2S)-5-carbamimidamido-2-[(2S)-2-[(2S)-2,6-diaminohexanamido]propanamido]pentanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Lys Lys Ala Arg

(2S)-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2,6-diaminohexanamido]hexanamido]propanamido]-5-carbamimidamidopentanoic acid

C21H43N9O5 (501.33869880000003)

Lys Lys Lys Val

(2S)-2-[(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2,6-diaminohexanamido]hexanamido]hexanamido]-3-methylbutanoic acid

C23H47N7O5 (501.3638492)

Lys Lys Arg Ala

(2S)-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2,6-diaminohexanamido]hexanamido]-5-carbamimidamidopentanamido]propanoic acid

C21H43N9O5 (501.33869880000003)

Lys Lys Val Lys

(2S)-6-amino-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2,6-diaminohexanamido]hexanamido]-3-methylbutanamido]hexanoic acid

C23H47N7O5 (501.3638492)

Lys Arg Ala Lys

(2S)-6-amino-2-[(2S)-2-[(2S)-5-carbamimidamido-2-[(2S)-2,6-diaminohexanamido]pentanamido]propanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Lys Arg Lys Ala

(2S)-2-[(2S)-6-amino-2-[(2S)-5-carbamimidamido-2-[(2S)-2,6-diaminohexanamido]pentanamido]hexanamido]propanoic acid

C21H43N9O5 (501.33869880000003)

Lys Val Lys Lys

(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2,6-diaminohexanamido]-3-methylbutanamido]hexanamido]hexanoic acid

C23H47N7O5 (501.3638492)

Arg Ala Lys Lys

(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-[(2S)-2-amino-5-carbamimidamidopentanamido]propanamido]hexanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Arg Lys Ala Lys

(2S)-6-amino-2-[(2S)-2-[(2S)-6-amino-2-[(2S)-2-amino-5-carbamimidamidopentanamido]hexanamido]propanamido]hexanoic acid

C21H43N9O5 (501.33869880000003)

Arg Lys Lys Ala

(2S)-2-[(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-amino-5-carbamimidamidopentanamido]hexanamido]hexanamido]propanoic acid

C21H43N9O5 (501.33869880000003)

Val Lys Lys Lys

(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-6-amino-2-[(2S)-2-amino-3-methylbutanamido]hexanamido]hexanamido]hexanoic acid

C23H47N7O5 (501.3638492)

(Z)-2-hexacos-17-enamidoethanesulfonic acid

C28H55NO4S (501.38515900000004)

MGTS 18:0

1-octadecanoyl-sn-glycero-3-O-(N,N,N-trimethyl)-homoserine

C28H55NO6 (501.402917)

1-(4-(4-HEPTYLCYCLOHEXYL)PHENYL)ISOTHIO&

C34H47NS (501.3429022)

7-[(1R,2R,3R,5S)-3,5-Dihydroxy-2-[(3S)-3-hydroxyoctyl]cyclopentyl]heptanoylcarnitine

C27H51NO7 (501.3665336)

(9Z,12Z,15Z,18Z,21Z)-Tetracosa-9,12,15,18,21-pentaenoylcarnitine

C31H51NO4 (501.38178860000005)

Ldgts 18:0

C28H55NO6 (501.402917)

Ldgcc 17:1