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Record Information
Version5.0
StatusPredicted
Creation Date2021-03-31 19:09:51 UTC
Update Date2022-10-24 19:45:09 UTC
HMDB IDHMDB0241531
Secondary Accession NumbersNone
Metabolite Identification
Common Name(7Z)-Octadec-7-enoylcarnitine
Description(7Z)-octadec-7-enoylcarnitine is an acylcarnitine. More specifically, it is an (7Z)-octadec-7-enoic 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 (PMID: 35710135 ), 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. (7Z)-octadec-7-enoylcarnitine is therefore classified as a long chain AC. As a long-chain acylcarnitine (7Z)-octadec-7-enoylcarnitine 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. In particular (7Z)-octadec-7-enoylcarnitine is elevated in the blood or plasma of individuals with carnitine palmitoyl transferase 2 deficiency (PMID: 15653102 , PMID: 11999976 ), cardiovascular mortality in incident dialysis patients (PMID: 24308938 ), schizophrenia (PMID: 31161852 ), succinic semialdehyde dehydrogenase deficiency (PMID: 32967698 ), neonatal macrosomia (PMID: 32126138 ), liver cirrhosis (PMID: 32075591 ), CPT II deficiency (PMID: 28801073 , PMID: 18987586 , PMID: 18925671 , PMID: 11585077 ), carnitine/acylcarnitine translocase (CACT) deficiency (PMID: 15057979 ), and ischaemia/reperfusion (PMID: 26936967 , PMID: 22607863 , PMID: 24468136 ). 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 insulin's 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 (PMID: 35710135 ).
Structure
Data?1621264121
SynonymsNot Available
Chemical FormulaC25H47NO4
Average Molecular Weight425.654
Monoisotopic Molecular Weight425.350508997
IUPAC Name3-(octadec-7-enoyloxy)-4-(trimethylazaniumyl)butanoate
Traditional Name3-(octadec-7-enoyloxy)-4-(trimethylammonio)butanoate
CAS Registry NumberNot Available
SMILES
CCCCCCCCCCC=CCCCCCC(=O)OC(CC([O-])=O)C[N+](C)(C)C
InChI Identifier
InChI=1S/C25H47NO4/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-25(29)30-23(21-24(27)28)22-26(2,3)4/h14-15,23H,5-13,16-22H2,1-4H3
InChI KeySYRUSDSGYMLOGB-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as acyl carnitines. These are organic compounds containing a fatty acid with the carboxylic acid attached to carnitine through an ester bond.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acid esters
Direct ParentAcyl carnitines
Alternative Parents
Substituents
  • Acyl-carnitine
  • Dicarboxylic acid or derivatives
  • Tetraalkylammonium salt
  • Quaternary ammonium salt
  • Carboxylic acid salt
  • Carboxylic acid ester
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organic salt
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Amine
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Physiological effect
Disposition
ProcessNot Available
Role
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP2.56ChemAxon
pKa (Strongest Acidic)4.22ChemAxon
pKa (Strongest Basic)-7.1ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area66.43 ŲChemAxon
Rotatable Bond Count21ChemAxon
Refractivity147.4 m³·mol⁻¹ChemAxon
Polarizability53.61 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+218.61630932474
DeepCCS[M-H]-214.59730932474
DeepCCS[M-2H]-251.13930932474
DeepCCS[M+Na]+227.43130932474

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
(7Z)-Octadec-7-enoylcarnitineCCCCCCCCCCC=CCCCCCC(=O)OC(CC([O-])=O)C[N+](C)(C)C3233.1Standard polar33892256
(7Z)-Octadec-7-enoylcarnitineCCCCCCCCCCC=CCCCCCC(=O)OC(CC([O-])=O)C[N+](C)(C)C2616.4Standard non polar33892256
(7Z)-Octadec-7-enoylcarnitineCCCCCCCCCCC=CCCCCCC(=O)OC(CC([O-])=O)C[N+](C)(C)C2842.9Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - (7Z)-Octadec-7-enoylcarnitine GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - (7Z)-Octadec-7-enoylcarnitine GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 10V, Positive-QTOFNot Available2021-04-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 20V, Positive-QTOFNot Available2021-04-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 40V, Positive-QTOFNot Available2021-04-06Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 10V, Positive-QTOFsplash10-004i-0000900000-c76c8c1a67e6b24de5c12021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 20V, Positive-QTOFsplash10-002r-9000500000-4902a8769b2895518a152021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - (7Z)-Octadec-7-enoylcarnitine 40V, Positive-QTOFsplash10-000i-9000000000-e9262cbaff8cb4ad0ba62021-09-25Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem CompoundNot Available
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
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  2. Minkler PE, Kerner J, North KN, Hoppel CL: Quantitation of long-chain acylcarnitines by HPLC/fluorescence detection: application to plasma and tissue specimens from patients with carnitine palmitoyltransferase-II deficiency. Clin Chim Acta. 2005 Feb;352(1-2):81-92. [PubMed:15653102 ]
  3. Gempel K, Kiechl S, Hofmann S, Lochmuller H, Kiechl-Kohlendorfer U, Willeit J, Sperl W, Rettinger A, Bieger I, Pongratz D, Gerbitz KD, Bauer MF: Screening for carnitine palmitoyltransferase II deficiency by tandem mass spectrometry. J Inherit Metab Dis. 2002 Feb;25(1):17-27. [PubMed:11999976 ]
  4. Blazenovic I, Kind T, Sa MR, Ji J, Vaniya A, Wancewicz B, Roberts BS, Torbasinovic H, Lee T, Mehta SS, Showalter MR, Song H, Kwok J, Jahn D, Kim J, Fiehn O: Structure Annotation of All Mass Spectra in Untargeted Metabolomics. Anal Chem. 2019 Feb 5;91(3):2155-2162. doi: 10.1021/acs.analchem.8b04698. Epub 2019 Jan 16. [PubMed:30608141 ]
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  19. Liepinsh E, Makrecka-Kuka M, Volska K, Kuka J, Makarova E, Antone U, Sevostjanovs E, Vilskersts R, Strods A, Tars K, Dambrova M: Long-chain acylcarnitines determine ischaemia/reperfusion-induced damage in heart mitochondria. Biochem J. 2016 May 1;473(9):1191-202. doi: 10.1042/BCJ20160164. Epub 2016 Mar 2. [PubMed:26936967 ]
  20. Shah SH, Sun JL, Stevens RD, Bain JR, Muehlbauer MJ, Pieper KS, Haynes C, Hauser ER, Kraus WE, Granger CB, Newgard CB, Califf RM, Newby LK: Baseline metabolomic profiles predict cardiovascular events in patients at risk for coronary artery disease. Am Heart J. 2012 May;163(5):844-850.e1. doi: 10.1016/j.ahj.2012.02.005. [PubMed:22607863 ]
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