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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2007-05-22 19:11:00 UTC
Update Date2022-03-07 02:49:30 UTC
HMDB IDHMDB0006245
Secondary Accession Numbers
  • HMDB0011642
  • HMDB06245
  • HMDB11642
Metabolite Identification
Common Name18-Hydroxyarachidonic acid
Description(18R)-Hydroxyarachidonate is a substrate for CYP4F8 or leukotriene-B4 20-monooxygenase (EC 1.14.13.30). This enzyme hydroxylates arachdonic acid (20:4n-6) to (18R)-hydroxyarachidonate in the endoplasmic reticulum. This reaction is irreversible. CYP4F8 is a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and functions as a 19-hydroxylase of prostaglandins in seminal vesicles. In particular, CYP4F8 catalyzes the 2-hydroxylation of PGH1 and PGH2, which will lead to biosynthesis of the two main PGs of human seminal fluid, (19R)-hydroxy-PGE1 and (19R)-hydroxy-PGE2 (PMID: 10791960 ). 18-Hydroxyarachidonic acid is an intermediate in eicosanoid metabolism.
Structure
Data?1582752377
Synonyms
ValueSource
(18R)-HETEChEBI
(5Z,8Z,11Z,14Z,18R)-18-Hydroxyicosatetraenoic acidChEBI
18(R)-Hydroxyeicosatetraenoic acidChEBI
Hydroxyarachidonic acidChEBI
(5Z,8Z,11Z,14Z,18R)-18-HydroxyicosatetraenoateGenerator
18(R)-HydroxyeicosatetraenoateGenerator
HydroxyarachidonateGenerator
18-HydroxyarachidonateGenerator
(18R)-HydroxyarachidonateHMDB
(18R)-Hydroxyarachidonic acidHMDB
18-HETEHMDB
18-HydroxyeicosatetraenoateHMDB
18-Hydroxyeicosatetraenoic acidHMDB
Omega-hydroxyarachidonic acidHMDB
W-Hydroxyarachidonic acidHMDB
18-Hydroxy-5,8,11,14-eicosatetraenoic acidHMDB
18-Hydroxy-arachidonateHMDB
Chemical FormulaC20H32O3
Average Molecular Weight320.4663
Monoisotopic Molecular Weight320.23514489
IUPAC Name(5Z,8Z,11Z,14Z,18R)-18-hydroxyicosa-5,8,11,14-tetraenoic acid
Traditional Name18-hydroxy-arachidonic acid
CAS Registry Number124411-81-0
SMILES
CC[C@@H](O)CC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O
InChI Identifier
InChI=1S/C20H32O3/c1-2-19(21)17-15-13-11-9-7-5-3-4-6-8-10-12-14-16-18-20(22)23/h4-7,10-13,19,21H,2-3,8-9,14-18H2,1H3,(H,22,23)/b6-4-,7-5-,12-10-,13-11-/t19-/m1/s1
InChI KeyPPCHNRUZQWLEMF-LFFPGIGVSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as hydroxyeicosatetraenoic acids. These are eicosanoic acids with an attached hydroxyl group and four CC double bonds.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassEicosanoids
Direct ParentHydroxyeicosatetraenoic acids
Alternative Parents
Substituents
  • Hydroxyeicosatetraenoic acid
  • Long-chain fatty acid
  • Hydroxy fatty acid
  • Fatty acid
  • Unsaturated fatty acid
  • Secondary alcohol
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Organic oxide
  • Organic oxygen compound
  • Alcohol
  • Hydrocarbon derivative
  • Carbonyl group
  • Organooxygen compound
  • 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 Solubility0.002 g/LALOGPS
logP5.81ALOGPS
logP5.2ChemAxon
logS-5.2ALOGPS
pKa (Strongest Acidic)4.82ChemAxon
pKa (Strongest Basic)-1.3ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count14ChemAxon
Refractivity101.62 m³·mol⁻¹ChemAxon
Polarizability38.21 ųChemAxon
Number of Rings0ChemAxon
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]+184.51831661259
DarkChem[M-H]-184.28131661259
DeepCCS[M+H]+184.38430932474
DeepCCS[M-H]-182.02630932474
DeepCCS[M-2H]-214.91230932474
DeepCCS[M+Na]+190.47730932474
AllCCS[M+H]+186.832859911
AllCCS[M+H-H2O]+184.032859911
AllCCS[M+NH4]+189.532859911
AllCCS[M+Na]+190.332859911
AllCCS[M-H]-185.332859911
AllCCS[M+Na-2H]-187.132859911
AllCCS[M+HCOO]-189.232859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
18-Hydroxyarachidonic acidCC[C@@H](O)CC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O4063.0Standard polar33892256
18-Hydroxyarachidonic acidCC[C@@H](O)CC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O2320.2Standard non polar33892256
18-Hydroxyarachidonic acidCC[C@@H](O)CC\C=C/C\C=C/C\C=C/C\C=C/CCCC(O)=O2556.7Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
18-Hydroxyarachidonic acid,1TMS,isomer #1CC[C@H](CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O)O[Si](C)(C)C2711.8Semi standard non polar33892256
18-Hydroxyarachidonic acid,1TMS,isomer #2CC[C@@H](O)CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C2587.1Semi standard non polar33892256
18-Hydroxyarachidonic acid,2TMS,isomer #1CC[C@H](CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C)O[Si](C)(C)C2624.6Semi standard non polar33892256
18-Hydroxyarachidonic acid,1TBDMS,isomer #1CC[C@H](CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O)O[Si](C)(C)C(C)(C)C2958.8Semi standard non polar33892256
18-Hydroxyarachidonic acid,1TBDMS,isomer #2CC[C@@H](O)CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C(C)(C)C2833.5Semi standard non polar33892256
18-Hydroxyarachidonic acid,2TBDMS,isomer #1CC[C@H](CC/C=C\C/C=C\C/C=C\C/C=C\CCCC(=O)O[Si](C)(C)C(C)(C)C)O[Si](C)(C)C(C)(C)C3112.9Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 18-Hydroxyarachidonic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-0f6y-7291000000-16728ad8bd8ebb944fe22017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 18-Hydroxyarachidonic acid GC-MS (2 TMS) - 70eV, Positivesplash10-009i-9436500000-0c21440f1fd79ba119842017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 18-Hydroxyarachidonic 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 - 18-Hydroxyarachidonic acid 10V, Negative-QTOFsplash10-014i-0019000000-710912287685513d0e072017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 20V, Negative-QTOFsplash10-0uxr-1059000000-ad675311c547d18f97bb2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 40V, Negative-QTOFsplash10-0a4l-9030000000-a7c5a41adbeb99e30dbc2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 10V, Negative-QTOFsplash10-014i-0009000000-777fdb814292c66079c92021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 20V, Negative-QTOFsplash10-0gb9-3059000000-c59628baf2569d14b3c32021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 40V, Negative-QTOFsplash10-0a4l-9020000000-d11651945eb0a6c4f27d2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 10V, Positive-QTOFsplash10-0udi-0059000000-a75bea5dd5332be1a84f2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 20V, Positive-QTOFsplash10-0udr-1292000000-ef55afde193cfcd015382017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 40V, Positive-QTOFsplash10-1000-8790000000-0eab084330a82cf882262017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 10V, Positive-QTOFsplash10-0uk9-1339000000-0392a1ab82d4e70b35db2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 20V, Positive-QTOFsplash10-0fri-4953000000-34622f97ba9d1fd54e9b2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 18-Hydroxyarachidonic acid 40V, Positive-QTOFsplash10-015c-9600000000-7cde68db4ec7173c61772021-09-22Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Extracellular
  • Membrane
  • Endoplasmic reticulum
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.000273 +/- 0.000047 uMAdult (>18 years old)BothNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB023857
KNApSAcK IDNot Available
Chemspider ID9316866
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG ID2300206
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound11141754
PDB IDNot Available
ChEBI ID91132
Food Biomarker OntologyNot Available
VMH ID18HARACHD
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceRomanov, Stepan G.; Ivanov, Igor V.; Groza, Nataliya V.; Kuhn, Hartmut; Myagkova, Galina I. Total synthesis of (5Z,8Z,11Z,14Z)-18- and 19-oxoeicosa-5,8,11,14-tetraenoic acids. Tetrahedron (2002), 58(42), 8483-8487.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Bylund J, Hidestrand M, Ingelman-Sundberg M, Oliw EH: Identification of CYP4F8 in human seminal vesicles as a prominent 19-hydroxylase of prostaglandin endoperoxides. J Biol Chem. 2000 Jul 21;275(29):21844-9. [PubMed:10791960 ]

Enzymes

General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. In liver microsomes, this enzyme is involved in an NADPH-dependent electron transport pathway. It oxidizes a variety of structurally unrelated compounds, including steroids, fatty acids, and xenobiotics.
Gene Name:
CYP4F2
Uniprot ID:
P78329
Molecular weight:
59852.825
General function:
Involved in monooxygenase activity
Specific function:
Cytochromes P450 are a group of heme-thiolate monooxygenases. This enzyme requires molecular oxygen and NADPH for the omega-hydroxylation of LTB4, a potent chemoattractant for polymorphonuclear leukocytes.
Gene Name:
CYP4F3
Uniprot ID:
Q08477
Molecular weight:
59846.085