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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2011-07-06 14:02:43 UTC
Update Date2022-03-07 02:51:34 UTC
HMDB IDHMDB0013649
Secondary Accession Numbers
  • HMDB13649
Metabolite Identification
Common NameEicosapentaenoyl Ethanolamide
DescriptionEicosapentaenoyl Ethanolamide (EPEA) is an endogenous fatty acid amide. EPEA is metabolized by fatty acid amide hydrolase (FAAH) and N-acylethanolamine-hydrolyzing acid amidase (NAAA), the latter of which has more specificity toward PEA over other fatty acid amides. DHEA and eicosapentaenoyl ethanolamide (EPEA) bind to the CB1 receptor in rat brains.23 DHA levels in the mouse brain have been shown to inversely affect the levels of 2AG.
Structure
Data?1582753140
Synonyms
ValueSource
(5Z,8Z,11Z,14Z,17Z)-Eicosapentaenoyl ethanolamideChEBI
(5Z,8Z,11Z,14Z,17Z-Eicosapentaenoyl) ethanolamineChEBI
all-cis-Eicosa-5,8,11,14,17-pentaenoyl ethanolamideChEBI
all-cis-Icosa-5,8,11,14,17-pentaenoyl ethanolamideChEBI
Anandamide (20:5, N-3)ChEBI
EPEAChEBI
Icosapentaenoyl ethanolamideChEBI
N-(5Z,8Z,11Z,14Z,17Z-Eicosapentaenoyl)ethanolamineChEBI
N-cis-5,8, 11,14,17-EicosapentaenoylethanolamineChEBI
(5Z,8Z,11Z,14Z,17Z)-Icosapentaenoyl ethanolamideChEBI, HMDB
Eicosapentaenoyl ethanolamideChEBI
N-(2-Hydroxyethyl)-5Z,8Z,11Z,14Z,17Z-eicosapentaenamideHMDB
N-(5Z,8Z,11Z,14Z,17Z-Eicosapentaenoyl)-ethanolamineHMDB
Chemical FormulaC22H35NO2
Average Molecular Weight345.5188
Monoisotopic Molecular Weight345.266779369
IUPAC Name(5Z,8Z,11Z,14Z,17Z)-N-(2-hydroxyethyl)icosa-5,8,11,14,17-pentaenamide
Traditional Name(5Z,8Z,11Z,14Z,17Z)-N-(2-hydroxyethyl)icosa-5,8,11,14,17-pentaenamide
CAS Registry Number109001-03-8
SMILES
CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCO
InChI Identifier
InChI=1S/C22H35NO2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-22(25)23-20-21-24/h3-4,6-7,9-10,12-13,15-16,24H,2,5,8,11,14,17-21H2,1H3,(H,23,25)/b4-3-,7-6-,10-9-,13-12-,16-15-
InChI KeyOVKKNJPJQKTXIT-JLNKQSITSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as n-acylethanolamines. N-acylethanolamines are compounds containing an N-acyethanolamine moiety, which is characterized by an acyl group is linked to the nitrogen atom of ethanolamine.
KingdomOrganic compounds
Super ClassOrganic nitrogen compounds
ClassOrganonitrogen compounds
Sub ClassAmines
Direct ParentN-acylethanolamines
Alternative Parents
Substituents
  • N-acylethanolamine
  • Fatty amide
  • N-acyl-amine
  • Fatty acyl
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Carboxylic acid derivative
  • Alcohol
  • Organooxygen compound
  • Primary alcohol
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Process
Role
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 Solubility0.0011 g/LALOGPS
logP5.78ALOGPS
logP4.95ChemAxon
logS-5.5ALOGPS
pKa (Strongest Acidic)15.44ChemAxon
pKa (Strongest Basic)-0.34ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area49.33 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity114.08 m³·mol⁻¹ChemAxon
Polarizability41.74 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+195.67331661259
DarkChem[M-H]-194.36131661259
DeepCCS[M+H]+185.97230932474
DeepCCS[M-H]-183.61430932474
DeepCCS[M-2H]-217.54830932474
DeepCCS[M+Na]+192.77530932474
AllCCS[M+H]+192.632859911
AllCCS[M+H-H2O]+189.932859911
AllCCS[M+NH4]+195.132859911
AllCCS[M+Na]+195.832859911
AllCCS[M-H]-190.732859911
AllCCS[M+Na-2H]-192.832859911
AllCCS[M+HCOO]-195.432859911

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. Predicted by Afia on May 17, 2022.5.89 minutes32390414
Predicted by Siyang on May 30, 202222.3594 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20222.08 minutes32390414
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid3180.4 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid411.7 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid205.5 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid312.5 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid615.9 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid1024.7 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 Acid578.8 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)121.6 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid2084.6 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid767.5 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid1857.0 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid746.3 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid531.1 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate378.4 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA419.5 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water9.0 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Eicosapentaenoyl EthanolamideCC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCO3555.8Standard polar33892256
Eicosapentaenoyl EthanolamideCC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCO2561.8Standard non polar33892256
Eicosapentaenoyl EthanolamideCC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CCCC(=O)NCCO2853.1Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Eicosapentaenoyl Ethanolamide,1TMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)NCCO[Si](C)(C)C2867.9Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,1TMS,isomer #2CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO)[Si](C)(C)C2782.2Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C)[Si](C)(C)C2833.8Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C)[Si](C)(C)C2905.8Standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C)[Si](C)(C)C2830.2Standard polar33892256
Eicosapentaenoyl Ethanolamide,1TBDMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)NCCO[Si](C)(C)C(C)(C)C3120.5Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,1TBDMS,isomer #2CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO)[Si](C)(C)C(C)(C)C3048.1Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TBDMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C3341.3Semi standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TBDMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C3273.8Standard non polar33892256
Eicosapentaenoyl Ethanolamide,2TBDMS,isomer #1CC/C=C\C/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)N(CCO[Si](C)(C)C(C)(C)C)[Si](C)(C)C(C)(C)C2886.1Standard polar33892256
Spectra
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
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 IDFDB029619
KNApSAcK IDNot Available
Chemspider ID4446570
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound5283450
PDB IDNot Available
ChEBI ID71467
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. Balvers MG, Verhoeckx KC, Plastina P, Wortelboer HM, Meijerink J, Witkamp RF: Docosahexaenoic acid and eicosapentaenoic acid are converted by 3T3-L1 adipocytes to N-acyl ethanolamines with anti-inflammatory properties. Biochim Biophys Acta. 2010 Oct;1801(10):1107-14. doi: 10.1016/j.bbalip.2010.06.006. Epub 2010 Jun 27. [PubMed:20601112 ]