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Record Information
Version2.0
Created at2022-09-05 08:42:45 UTC
Updated at2022-09-05 08:42:45 UTC
NP-MRD IDNP0210756
Secondary Accession NumbersNone
Natural Product Identification
Common Name9r,10s-epoxy-stearic acid
Description9,10-Epoxyoctadecanoic acid, also known as 9,10-epoxystearate or 8-(3-octyloxiran-2-yl)octanoate, belongs to the class of organic compounds known as lineolic acids and derivatives. These are derivatives of lineolic acid. Lineolic acid is a polyunsaturated omega-6 18 carbon long fatty acid, with two CC double bonds at the 9- and 12-positions. 9,10-Epoxyoctadecanoic acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. 9,10-Epoxyoctadecanoic acid is an epoxy fatty acid. Outside of the human body, 9,10-epoxyoctadecanoic acid has been detected, but not quantified in, several different foods, such as celery stalks, hedge mustards, roselles, brussel sprouts, and pepper (spice). 9r,10s-epoxy-stearic acid is found in Jodina rhombifolia and Shorea robusta. 9r,10s-epoxy-stearic acid was first documented in 1995 (PMID: 8520208). This could make 9,10-epoxyoctadecanoic acid a potential biomarker for the consumption of these foods (PMID: 19120447) (PMID: 12505783).
Structure
Thumb
Synonyms
ValueSource
9,10-Epoxystearic acidChEBI
9,10-EpoxystearateGenerator
9,10-EpoxyoctadecanoateGenerator
8-(3-Octyloxiran-2-yl)octanoic acidHMDB
8-(3-Octyloxiran-2-yl)octanoateHMDB
9,10-Epoxystearic acid, potassium saltHMDB
cis-9,10-Epoxystearic acidHMDB
9,10-Epoxystearic acid, (trans)-isomerHMDB
9,10-Epoxystearic acid, 14C-acidHMDB
9,10-Epoxystearic acid, ammonium saltHMDB
9,10-Epoxystearic acid, (cis)-isomerHMDB
9,10-Epoxystearic acid, sodium saltHMDB
9,10-Epoxyoctadecanoic acidChEBI, MeSH
Chemical FormulaC18H34O3
Average Mass298.4608 Da
Monoisotopic Mass298.25079 Da
IUPAC Name8-(3-octyloxiran-2-yl)octanoic acid
Traditional Name9R,10S-epoxy-stearic acid
CAS Registry NumberNot Available
SMILES
CCCCCCCCC1OC1CCCCCCCC(O)=O
InChI Identifier
InChI=1S/C18H34O3/c1-2-3-4-5-7-10-13-16-17(21-16)14-11-8-6-9-12-15-18(19)20/h16-17H,2-15H2,1H3,(H,19,20)
InChI KeyIMYZYCNQZDBZBQ-UHFFFAOYSA-N
Experimental Spectra
Not Available
Predicted Spectra
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species NameSourceReference
Jodina rhombifoliaLOTUS Database
Shorea robustaLOTUS Database
Chemical Taxonomy
Description Belongs to the class of organic compounds known as lineolic acids and derivatives. These are derivatives of lineolic acid. Lineolic acid is a polyunsaturated omega-6 18 carbon long fatty acid, with two CC double bonds at the 9- and 12-positions.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassLineolic acids and derivatives
Direct ParentLineolic acids and derivatives
Alternative Parents
Substituents
  • Octadecanoid
  • Medium-chain fatty acid
  • Epoxy fatty acid
  • Heterocyclic fatty acid
  • 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
Physical Properties
StateNot Available
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP6.55ALOGPS
logP5.85ChemAxon
logS-5.9ALOGPS
pKa (Strongest Acidic)4.62ChemAxon
pKa (Strongest Basic)-4.2ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area49.83 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity85.81 m³·mol⁻¹ChemAxon
Polarizability38.62 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0061650
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB030637
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDC19418
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN IDNot Available
PubChem Compound15868
PDB IDNot Available
ChEBI ID85661
Good Scents IDNot Available
References
General References
  1. Sauveplane V, Kandel S, Kastner PE, Ehlting J, Compagnon V, Werck-Reichhart D, Pinot F: Arabidopsis thaliana CYP77A4 is the first cytochrome P450 able to catalyze the epoxidation of free fatty acids in plants. FEBS J. 2009 Feb;276(3):719-35. doi: 10.1111/j.1742-4658.2008.06819.x. Epub 2008 Dec 19. [PubMed:19120447 ]
  2. Ulsaker GA, Teien G: Identification of 9,10-epoxyoctadecanoic acid in human urine using gas chromatography-mass spectrometry. Biomed Chromatogr. 1995 Jul-Aug;9(4):183-7. doi: 10.1002/bmc.1130090407. [PubMed:8520208 ]
  3. Tsikas D, Sawa M, Brunner G, Gutzki FM, Meyer HH, Frolich JC: Gas chromatography-mass spectrometry of cis-9,10-epoxyoctadecanoic acid (cis-EODA). I. Direct evidence for cis-EODA formation from oleic acid oxidation by liver microsomes and isolated hepatocytes. J Chromatogr B Analyt Technol Biomed Life Sci. 2003 Feb 5;784(2):351-65. doi: 10.1016/s1570-0232(02)00821-8. [PubMed:12505783 ]
  4. LOTUS database [Link]