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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2008-09-15 09:55:08 UTC
Update Date2021-09-14 15:44:19 UTC
HMDB IDHMDB0010212
Secondary Accession Numbers
  • HMDB10212
Metabolite Identification
Common Name17,18-EpETE
Description17,18-EpETE, also known as 17,18-eeq or 17R,18S-epete, 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. Thus, 17,18-epete is considered to be an eicosanoid. Based on a literature review a significant number of articles have been published on 17,18-EpETE.
Structure
Data?1582752797
Synonyms
ValueSource
17(18)-Epoxy-5Z,8Z,11Z,14Z-eicosatetraenoic acidChEBI
17,18-EEQChEBI
17,18-EETeTrChEBI
17,18-Epoxyeicosatetraenoic acidChEBI
17,18-Epoxyicosatetraenoic acidChEBI
17(18)-Epoxy-5Z,8Z,11Z,14Z-eicosatetraenoateGenerator
17,18-EpoxyeicosatetraenoateGenerator
17,18-EpoxyicosatetraenoateGenerator
(5E,8E,11E,14E)-16-(3-Ethyloxiran-2-yl)hexadeca-5,8,11,14-tetraenoateHMDB
(5E,8E,11E,14E)-16-(3-Ethyloxiran-2-yl)hexadeca-5,8,11,14-tetraenoic acidHMDB
(5Z,8Z,11Z,14Z)-(17R,18S)-17,18-Epoxyicosa-5,8,11,14-tetraenoateHMDB
(5Z,8Z,11Z,14Z)-(17R,18S)-17,18-Epoxyicosa-5,8,11,14-tetraenoic acidHMDB
17,18-Epoxy-5,8,11,14-eicosatetraenoateHMDB
17,18-Epoxy-5,8,11,14-eicosatetraenoic acidHMDB
17R,18S-EpETEHMDB
17R,18S-Epoxy-5Z,8Z,11Z,14Z-eicosatetraenoateHMDB
17R,18S-Epoxy-5Z,8Z,11Z,14Z-eicosatetraenoic acidHMDB
17R,18S-Epoxy-5Z,8Z,11Z,14Z-icosatetraenoateHMDB
17R,18S-Epoxy-5Z,8Z,11Z,14Z-icosatetraenoic acidHMDB
17,18-EpETEMeSH
Chemical FormulaC20H30O3
Average Molecular Weight318.4504
Monoisotopic Molecular Weight318.219494826
IUPAC Name(5Z,8Z,11Z,14Z)-16-(3-ethyloxiran-2-yl)hexadeca-5,8,11,14-tetraenoic acid
Traditional Name(5Z,8Z,11Z,14Z)-16-(3-ethyloxiran-2-yl)hexadeca-5,8,11,14-tetraenoic acid
CAS Registry Number131339-23-6
SMILES
CCC1OC1C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O
InChI Identifier
InChI=1S/C20H30O3/c1-2-18-19(23-18)16-14-12-10-8-6-4-3-5-7-9-11-13-15-17-20(21)22/h3,5-6,8-9,11-12,14,18-19H,2,4,7,10,13,15-17H2,1H3,(H,21,22)/b5-3-,8-6-,11-9-,14-12-
InChI KeyGPQVVJQEBXAKBJ-JPURVOHMSA-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
  • Epoxy fatty acid
  • Heterocyclic fatty acid
  • Unsaturated fatty acid
  • Carboxylic acid derivative
  • Carboxylic acid
  • Dialkyl ether
  • Oxirane
  • Ether
  • Monocarboxylic acid or derivatives
  • Organoheterocyclic compound
  • Oxacycle
  • Organic oxide
  • Hydrocarbon derivative
  • Carbonyl group
  • Organooxygen compound
  • Organic oxygen compound
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot 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 Solubility0.00054 g/LALOGPS
logP5.8ALOGPS
logP5.29ChemAxon
logS-5.8ALOGPS
pKa (Strongest Acidic)4.82ChemAxon
pKa (Strongest Basic)-4.2ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area49.83 ŲChemAxon
Rotatable Bond Count13ChemAxon
Refractivity99.47 m³·mol⁻¹ChemAxon
Polarizability37.08 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+184.15931661259
DarkChem[M-H]-184.60431661259
DeepCCS[M+H]+183.44130932474
DeepCCS[M-H]-181.08330932474
DeepCCS[M-2H]-213.9730932474
DeepCCS[M+Na]+189.53530932474
AllCCS[M+H]+187.132859911
AllCCS[M+H-H2O]+184.132859911
AllCCS[M+NH4]+189.832859911
AllCCS[M+Na]+190.632859911
AllCCS[M-H]-185.732859911
AllCCS[M+Na-2H]-187.232859911
AllCCS[M+HCOO]-189.032859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter)). Predicted by Afia on May 17, 2022.7.12 minutes32390414
Predicted by Siyang on May 30, 202223.8233 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20220.86 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid34.0 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid3145.9 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid558.3 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid230.7 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid406.7 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid697.6 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid1165.4 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid580.8 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)92.0 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid2189.4 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid746.3 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1911.6 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid850.1 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid534.2 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate428.5 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA563.9 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water8.7 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
17,18-EpETECCC1OC1C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O3741.0Standard polar33892256
17,18-EpETECCC1OC1C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O2269.6Standard non polar33892256
17,18-EpETECCC1OC1C\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O2507.8Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
17,18-EpETE,1TMS,isomer #1CCC1OC1C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C2461.8Semi standard non polar33892256
17,18-EpETE,1TBDMS,isomer #1CCC1OC1C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C(C)(C)C2717.1Semi standard non polar33892256
Spectra
Biological Properties
Cellular Locations
  • Membrane (predicted from logP)
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.000111 +/- 0.000031 uMAdult (>18 years old)Not Specified
Normal
details
BloodDetected and Quantified0.0000733 +/- 0.000095 uMAdult (>18 years old)Both
Normal
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB027367
KNApSAcK IDNot Available
Chemspider ID17220772
KEGG Compound IDC13843
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound16061089
PDB IDNot Available
ChEBI ID72853
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
  1. Oliw EH: Biosynthesis of 18(RD)-hydroxyeicosatetraenoic acid from arachidonic acid by microsomes of monkey seminal vesicles. Some properties of a novel fatty acid omega 3-hydroxylase and omega 3-epoxygenase. J Biol Chem. 1989 Oct 25;264(30):17845-53. [PubMed:2509448 ]