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Record Information
Version2.0
Created at2005-11-16 15:48:42 UTC
Updated at2024-09-03 04:15:02 UTC
NP-MRD IDNP0000557
Natural Product DOIhttps://doi.org/10.57994/0127
Secondary Accession NumbersNone
Natural Product Identification
Common NameOleic acid
DescriptionOleic acid (or 9Z)-Octadecenoic acid) is an unsaturated C-18 or an omega-9 fatty acid that is the most widely distributed and abundant fatty acid in nature. It occurs naturally in various animal and vegetable fats and oils. It is an odorless, colorless oil, although commercial samples may be yellowish. The name derives from the Latin word oleum, which means oil. Oleic acid is the most abundant fatty acid in human adipose tissue, and the second most abundant in human tissues overall, following palmitic acid. Oleic acid is a component of the normal human diet, being a part of animal fats and vegetable oils. Triglycerides of oleic acid represent the majority of olive oil (about 70%). Oleic acid triglycerides also make up 59–75% of pecan oil, 61% of canola oil, 36–67% of peanut oil, 60% of macadamia oil, 20–80% of sunflower oil, 15–20% of grape seed oil, sea buckthorn oil, 40% of sesame oil, and 14% of poppyseed oil. High oleic variants of plant sources such as sunflower (~80%) and canola oil (70%) also have been developed. Consumption has been associated with decreased low-density lipoprotein (LDL) cholesterol, and possibly with increased high-density lipoprotein (HDL) cholesterol, however, the ability of oleic acid to raise HDL is still debated. Oleic acid may be responsible for the hypotensive (blood pressure reducing) effects of olive oil that is considered a health benefit. Oleic acid is used in manufacturing of surfactants, soaps, plasticizers. It is also used as an emulsifying agent in foods and pharmaceuticals. Oleic acid is used commercially in the preparation of oleates and lotions, and as a pharmaceutical solvent.
Structure
Thumb
Synonyms
Chemical FormulaC18H34O2
Average Mass282.4614 Da
Monoisotopic Mass282.25588 Da
IUPAC Name(9Z)-octadec-9-enoic acid
Traditional Nameoleic acid
CAS Registry Number112-80-1
SMILES
CCCCCCCC\C=C/CCCCCCCC(O)=O
InChI Identifier
InChI=1S/C18H34O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h9-10H,2-8,11-17H2,1H3,(H,19,20)/b10-9-
InChI KeyZQPPMHVWECSIRJ-KTKRTIGZSA-N
Experimental Spectra
Spectrum TypeDescriptionDepositor EmailDepositor OrganizationDepositorDeposition DateView
1D NMR1H NMR Spectrum (1D, 700 MHz, CDCl3, simulated)Merangelgri2022-10-12View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, CDCL3, experimental)merangelgri@uncg.eduNot AvailableNot Available2024-05-11View Spectrum
1D NMR13C NMR Spectrum (1D, 176 MHz, CDCL3, experimental)merangelgri@uncg.eduNot AvailableNot Available2024-05-11View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, CDCl3, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CDCl3, experimental)Wishart LabWishart LabDavid Wishart2021-06-20View Spectrum
Predicted Spectra
Not Available
Chemical Shift Submissions
Not Available
Species
Species of Origin
Species Where Detected
Species NameSourceReference
Escherichia coliKNApSAcK Database
Homo sapiens (Serum)KNApSAcK Database
Homo sapiens (Urine)KNApSAcK Database
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
Physical Properties
StateLiquid
Experimental Properties
PropertyValueReference
Melting Point13.4 °CNot Available
Boiling Point194.00 to 195.00 °C. @ 1.20 mm HgThe Good Scents Company Information System
Water Solubility0.012 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP7.698 (est)The Good Scents Company Information System
Predicted Properties
PropertyValueSource
Water Solubility0.00012 g/LALOGPS
logP7.68ALOGPS
logP6.78ChemAxon
logS-6.4ALOGPS
pKa (Strongest Acidic)4.99ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count15ChemAxon
Refractivity87.4 m³·mol⁻¹ChemAxon
Polarizability37.09 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
HMDB IDHMDB0000207
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB009969
KNApSAcK IDC00001232
Chemspider ID393217
KEGG Compound IDC00712
BioCyc IDOLEATE-CPD
BiGG IDNot Available
Wikipedia LinkOleic_acid
METLIN ID190
PubChem Compound445639
PDB IDNot Available
ChEBI ID16196
Good Scents IDrw1029521
References
General References