Record Information
Version1.0
Creation date2015-05-07 21:15:21 UTC
Update date2019-11-26 03:22:10 UTC
Primary IDFDB031183
Secondary Accession Numbers
  • FDB002941
Chemical Information
FooDB Namestearate
DescriptionStearic acid, also known as stearate or N-octadecanoic acid, is a member of the class of compounds known as long-chain fatty acids. Long-chain fatty acids are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Thus, stearic acid is considered to be a fatty acid lipid molecule. Stearic acid is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Stearic acid can be synthesized from octadecane. Stearic acid is also a parent compound for other transformation products, including but not limited to, 3-oxooctadecanoic acid, (9S,10S)-10-hydroxy-9-(phosphonooxy)octadecanoic acid, and 16-methyloctadecanoic acid. Stearic acid can be found in a number of food items such as green bell pepper, common oregano, ucuhuba, and babassu palm, which makes stearic acid a potential biomarker for the consumption of these food products. Stearic acid can be found primarily in most biofluids, including urine, feces, cerebrospinal fluid (CSF), and sweat, as well as throughout most human tissues. Stearic acid exists in all living species, ranging from bacteria to humans. In humans, stearic acid is involved in the plasmalogen synthesis. Stearic acid is also involved in mitochondrial beta-oxidation of long chain saturated fatty acids, which is a metabolic disorder. Moreover, stearic acid is found to be associated with schizophrenia. Stearic acid is a non-carcinogenic (not listed by IARC) potentially toxic compound. Stearic acid ( STEER-ik, stee-ARR-ik) is a saturated fatty acid with an 18-carbon chain and has the IUPAC name octadecanoic acid. It is a waxy solid and its chemical formula is C17H35CO2H. Its name comes from the Greek word στέαρ "stéar", which means tallow. The salts and esters of stearic acid are called stearates. As its ester, stearic acid is one of the most common saturated fatty acids found in nature following palmitic acid. The triglyceride derived from three molecules of stearic acid is called stearin .
CAS Number57-11-4
Structure
Thumb
Synonyms
SynonymSource
18:0ChEBI
Acide octadecanoiqueChEBI
Acide steariqueChEBI
C18:0ChEBI
CH3-[CH2]16-COOHChEBI
N-Octadecanoic acidChEBI
OctadecansaeureChEBI
Octadecoic acidChEBI
OktadekansaeureChEBI
StearinsaeureChEBI
StearateKegg
N-OctadecanoateGenerator
OctadecoateGenerator
Octadecanoic acidHMDB
OctadecanoateHMDB
1-HeptadecanecarboxylateHMDB
1-Heptadecanecarboxylic acidHMDB
Stearex beadsHMDB
Stearic acid cherryHMDB
StearophanateHMDB
Stearophanic acidHMDB
Calcium stearateHMDB
Aluminum tristearateHMDB
Ammonium stearateHMDB
Zinc stearateHMDB
Magnesium stearateHMDB
Sodium stearateHMDB
Aluminum monostearateHMDB
FA(18:0)HMDB
Predicted Properties
PropertyValueSource
Water Solubility6.6e-05 g/LALOGPS
logP8.02ALOGPS
logP7.15ChemAxon
logS-6.6ALOGPS
pKa (Strongest Acidic)4.95ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count16ChemAxon
Refractivity86.29 m³·mol⁻¹ChemAxon
Polarizability38.64 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Chemical FormulaC18H36O2
IUPAC nameoctadecanoic acid
InChI IdentifierInChI=1S/C18H36O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H,19,20)
InChI KeyQIQXTHQIDYTFRH-UHFFFAOYSA-N
Isomeric SMILESCCCCCCCCCCCCCCCCCC(O)=O
Average Molecular Weight284.4772
Monoisotopic Molecular Weight284.271530396
Classification
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
  • 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
Ontology
Physiological effect

Health effect:

Disposition

Route of exposure:

Source:

Biological location:

Process

Naturally occurring process:

Role

Biological role:

Industrial application:

Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
PropertyValueReference
Physical stateNot Available
Physical DescriptionNot Available
Mass CompositionNot Available
Melting PointNot Available
Boiling PointNot Available
Experimental Water SolubilityNot Available
Experimental logPNot Available
Experimental pKaNot Available
Isoelectric pointNot Available
ChargeNot Available
Optical RotationNot Available
Spectroscopic UV DataNot Available
DensityNot Available
Refractive IndexNot Available
Spectra
Spectra
EI-MS/GC-MS
TypeDescriptionSplash KeyView
EI-MSMass Spectrum (Electron Ionization)splash10-0c03-9200000000-5dd52f837d56d80fa9682014-09-20View Spectrum
GC-MSOctadecanoic acid, 1 TMS, GC-MS Spectrumsplash10-0159-1900000000-9cc966384906cd35537dSpectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-0159-0900000000-b87a9955374d11966ba6Spectrum
GC-MSOctadecanoic acid, 1 TMS, GC-MS Spectrumsplash10-0100-9700000000-979da356343fa0697993Spectrum
GC-MSOctadecanoic acid, 1 TMS, GC-MS Spectrumsplash10-0159-2901000000-16194c704b7abd193647Spectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-06yo-9110000000-6f345827577cdc861acaSpectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-075c-9220000000-207b53a511763954eb66Spectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-0159-1900000000-9cc966384906cd35537dSpectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-0159-0900000000-b87a9955374d11966ba6Spectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-0100-9700000000-979da356343fa0697993Spectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-0159-2901000000-16194c704b7abd193647Spectrum
GC-MSOctadecanoic acid, non-derivatized, GC-MS Spectrumsplash10-014i-1900000000-d34fc01a79cc27a32080Spectrum
Predicted GC-MSOctadecanoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, Positivesplash10-0006-9540000000-c6c002443ac3a40dabdbSpectrum
Predicted GC-MSOctadecanoic acid, 1 TMS, Predicted GC-MS Spectrum - 70eV, Positivesplash10-009l-9551000000-b9a196da32e6273fad4fSpectrum
Predicted GC-MSOctadecanoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSOctadecanoic acid, non-derivatized, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSOctadecanoic acid, TBDMS_1_1, Predicted GC-MS Spectrum - 70eV, PositiveNot AvailableSpectrum
MS/MS
TypeDescriptionSplash KeyView
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Negative (Annotated)splash10-001i-0090000000-1368043827a20e28c1722012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Negative (Annotated)splash10-001i-0090000000-5c3fa1d38cf3d0a38d742012-07-24View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 10V, Negativesplash10-004r-0791000000-10ab351997f48e5126572017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF , Negativesplash10-004r-0791000000-10ab351997f48e5126572017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 20V, Negativesplash10-004r-0791000000-10ab351997f48e5126572017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 30V, Negativesplash10-001i-0090000000-55efcdc9c7bfd521ef5a2017-08-14View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 10V, Negativesplash10-001i-0090000000-9441e6362046ae1983842017-09-12View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF , Negativesplash10-001i-0090000000-f629b105972a0728beb62017-09-12View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 20V, Negativesplash10-001i-0090000000-fbf3f8e91badb0ec251d2017-09-12View Spectrum
MS/MSLC-MS/MS Spectrum - ESI-TOF 30V, Negativesplash10-001i-0090000000-55efcdc9c7bfd521ef5a2017-09-12View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-IT , negativesplash10-00lr-0090000000-a702a9f469dbb513856a2017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-TOF , negativesplash10-001i-0090000000-9441e6362046ae1983842017-09-14View Spectrum
MS/MSLC-MS/MS Spectrum - LC-ESI-TOF , negativesplash10-001i-0090000000-fbf3f8e91badb0ec251d2017-09-14View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014r-0090000000-34a309d09cb2def46a192015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00kr-4690000000-f68e827f7ebccd80d5bf2015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-8920000000-2e865f09d760af582c072015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014r-0090000000-34a309d09cb2def46a192015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00kr-4690000000-f68e827f7ebccd80d5bf2015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-8920000000-2e865f09d760af582c072015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0090000000-b3ce35f839a30b41c7182015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00m0-1090000000-bbb339a3dbe1b9ba0d542015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9240000000-1b84b49819fa37fce1ae2015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-001i-0090000000-b3ce35f839a30b41c7182015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00m0-1090000000-bbb339a3dbe1b9ba0d542015-05-27View Spectrum
Predicted MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9240000000-1b84b49819fa37fce1ae2015-05-27View Spectrum
NMR
TypeDescriptionView
1D NMR1H NMR Spectrum (1D, 500 MHz, CDCl3, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, 90 MHz, CDCl3, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, 25.16 MHz, CDCl3, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, CDCl3, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, CDCl3, experimental)Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, CDCl3, experimental)Spectrum
1D NMR13C NMR Spectrum (1D, 100 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 1000 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 200 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 300 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 400 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 500 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 600 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 700 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 800 MHz, H2O, predicted)Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, H2O, predicted)Spectrum
1D NMR13C NMR Spectrum (1D, 900 MHz, H2O, predicted)Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CDCl3, experimental)Spectrum
ChemSpider IDNot Available
ChEMBL IDNot Available
KEGG Compound IDNot Available
Pubchem Compound IDNot Available
Pubchem Substance IDNot Available
ChEBI IDNot Available
Phenol-Explorer IDNot Available
DrugBank IDNot Available
HMDB IDNot Available
CRC / DFC (Dictionary of Food Compounds) IDNot Available
EAFUS IDNot Available
Dr. Duke IDNot Available
BIGG IDNot Available
KNApSAcK IDNot Available
HET IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
Flavornet IDNot Available
GoodScent IDNot Available
SuperScent IDNot Available
Wikipedia IDNot Available
Phenol-Explorer Metabolite IDNot Available
Duplicate IDSNot Available
Old DFC IDSNot Available
Associated Foods
FoodContent Range AverageReference
FoodReference
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
Files
MSDSNot Available
References
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference