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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2008-09-16 13:19:52 UTC
Update Date2022-03-07 02:50:54 UTC
HMDB IDHMDB0010378
Secondary Accession Numbers
  • HMDB10378
Metabolite Identification
Common Name5,8,11-Eicosatrienoic acid
Description5,8,11-Eicosatrienoic acid (Mead acid) is a carboxylic acid with a 20-carbon chain and three methylene-interrupted cis double bonds. The first double bond is located at the ninth carbon from the omega end. In physiological literature, it is given the name 20:3(n-9). In the presence of lipoxygenase, Mead acid can form various hydroxy products (HETE). It is the only polyunsaturated fatty acid that the body can make de novo. Its elevated presence in the blood is an indication of essential fatty acid (EFA)deficiency. During dietary EFA insufficiency, especially arachidonic acid deficiency, the body will make Mead acid by the elongation and desaturation of oleic acid. (Wikipedia).
Structure
Data?1582752821
Synonyms
ValueSource
(5Z,8Z,11Z)-Eicosa-5,8,11-trienoic acidChEBI
(5Z,8Z,11Z)-Eicosatrienoic acidChEBI
5Z,8Z,11Z-Eicosatrienoic acidChEBI
5Z,8Z,11Z-Icosatrienoic acidChEBI
all-cis-Eicosa-5,8,11-trienoic acidChEBI
all-cis-Icosa-5,8,11-trienoic acidChEBI
C20:3N-9,12,15ChEBI
ETrE(5Z,8Z,11Z)ChEBI
Mead acidChEBI
(5Z,8Z,11Z)-Eicosa-5,8,11-trienoateGenerator
(5Z,8Z,11Z)-EicosatrienoateGenerator
5Z,8Z,11Z-EicosatrienoateGenerator
5Z,8Z,11Z-IcosatrienoateGenerator
all-cis-Eicosa-5,8,11-trienoateGenerator
all-cis-Icosa-5,8,11-trienoateGenerator
5,8,11-EicosatrienoateGenerator
5,8,11-Eicosatrienoic acidMeSH, HMDB
ETrA acidMeSH, HMDB
(5Z,8Z,11Z)-IcosatrienoateGenerator, HMDB
Chemical FormulaC20H34O2
Average Molecular Weight306.4828
Monoisotopic Molecular Weight306.255880332
IUPAC Name(5Z,8Z,11Z)-icosa-5,8,11-trienoic acid
Traditional Namemead acid
CAS Registry Number20590-32-3
SMILES
CCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O
InChI Identifier
InChI=1S/C20H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(21)22/h9-10,12-13,15-16H,2-8,11,14,17-19H2,1H3,(H,21,22)/b10-9-,13-12-,16-15-
InChI KeyUNSRRHDPHVZAHH-YOILPLPUSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as long-chain fatty acids. These are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acids and conjugates
Direct ParentLong-chain fatty acids
Alternative Parents
Substituents
  • Long-chain fatty acid
  • Unsaturated fatty acid
  • Straight chain fatty acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Not AvailableNot Available
Physical Properties
StateSolid
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
Water Solubility7.3e-05 g/LALOGPS
logP7.35ALOGPS
logP6.95ChemAxon
logS-6.6ALOGPS
pKa (Strongest Acidic)4.82ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity98.84 m³·mol⁻¹ChemAxon
Polarizability39.08 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+184.10231661259
DarkChem[M-H]-185.84231661259
DeepCCS[M+H]+184.52230932474
DeepCCS[M-H]-182.16430932474
DeepCCS[M-2H]-215.04930932474
DeepCCS[M+Na]+190.61530932474
AllCCS[M+H]+184.632859911
AllCCS[M+H-H2O]+181.632859911
AllCCS[M+NH4]+187.232859911
AllCCS[M+Na]+188.032859911
AllCCS[M-H]-185.232859911
AllCCS[M+Na-2H]-187.132859911
AllCCS[M+HCOO]-189.332859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
5,8,11-Eicosatrienoic acidCCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O3595.2Standard polar33892256
5,8,11-Eicosatrienoic acidCCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O2195.3Standard non polar33892256
5,8,11-Eicosatrienoic acidCCCCCCCC\C=C/C\C=C/C\C=C/CCCC(O)=O2331.4Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
5,8,11-Eicosatrienoic acid,1TMS,isomer #1CCCCCCCC/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C2383.8Semi standard non polar33892256
5,8,11-Eicosatrienoic acid,1TBDMS,isomer #1CCCCCCCC/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C(C)(C)C2629.7Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 5,8,11-Eicosatrienoic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-000x-9270000000-463f91799534dd9ba1f82017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5,8,11-Eicosatrienoic acid GC-MS (1 TMS) - 70eV, Positivesplash10-0209-9241000000-4adccb37d26c8a88baaf2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 5,8,11-Eicosatrienoic acid 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 - 5,8,11-Eicosatrienoic acid 10V, Positive-QTOFsplash10-000i-0092000000-602cfb1975c490e3881a2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Positive-QTOFsplash10-03ds-3490000000-1350ff64ed6aa1f5820a2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Positive-QTOFsplash10-05mp-9860000000-d900ed087b26c95309572017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Negative-QTOFsplash10-0a4i-0039000000-659857ef79dd2148ca8d2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Negative-QTOFsplash10-0bti-1095000000-43d44a6c226a6b2adffe2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Negative-QTOFsplash10-0a4l-9140000000-3585933dc08c1124a8e82017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Positive-QTOFsplash10-0a4r-3496000000-59740f5ce9cee4674e112021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Positive-QTOFsplash10-0a4r-9841000000-2a63f76b4744a3c7d2802021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Positive-QTOFsplash10-05nf-9300000000-2f17ca6393b3b1176c7a2021-09-23Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 10V, Negative-QTOFsplash10-0a4i-0019000000-22be6eda7da2c017414e2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 20V, Negative-QTOFsplash10-0a4i-2069000000-f9c4ad2fc23eeba4a0002021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 5,8,11-Eicosatrienoic acid 40V, Negative-QTOFsplash10-052f-9120000000-d8a09defc53f04953c552021-09-24Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
  • Feces
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.095 +/- 0.012 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified0.987 +/- 0.45 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified4.274 +/- 4.372 uMAdult (>18 years old)FemaleNormal details
BloodDetected and Quantified1.316 +/- 1.365 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified10.7 +/- 4.4 uMAdult (>18 years old)Not Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified6.3 +/- 3.8 uMAdult (>18 years old)Not Specified
Isovaleric acidemia
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal Cancer details
FecesDetected but not QuantifiedNot QuantifiedNewborn (0-30 days old)Not Specified
Premature neonates
details
Associated Disorders and Diseases
Disease References
Isovaleric acidemia
  1. Dercksen M, Kulik W, Mienie LJ, Reinecke CJ, Wanders RJ, Duran M: Polyunsaturated fatty acid status in treated isovaleric acidemia patients. Eur J Clin Nutr. 2016 Oct;70(10):1123-1126. doi: 10.1038/ejcn.2016.100. Epub 2016 Jun 22. [PubMed:27329611 ]
Colorectal cancer
  1. Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDC00052345
Chemspider ID4471956
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound5312531
PDB IDNot Available
ChEBI ID72865
Food Biomarker OntologyNot Available
VMH IDM02457
MarkerDB IDMDB00030041
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Download (PDF)
General ReferencesNot Available