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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2022-03-07 02:49:05 UTC
HMDB IDHMDB0000673
Secondary Accession Numbers
  • HMDB00673
Metabolite Identification
Common NameLinoleic acid
DescriptionLinoleic acid is a doubly unsaturated fatty acid, also known as an omega-6 fatty acid, occurring widely in plant glycosides. In this particular polyunsaturated fatty acid (PUFA), the first double bond is located between the sixth and seventh carbon atom from the methyl end of the fatty acid (n-6). Linoleic acid is an essential fatty acid in human nutrition because it cannot be synthesized by humans. It is used in the biosynthesis of prostaglandins (via arachidonic acid) and cell membranes (From Stedman, 26th ed). Linoleic acid is found to be associated with isovaleric acidemia, which is an inborn error of metabolism.
Structure
Data?1601259058
Synonyms
ValueSource
(9Z,12Z)-Octadecadienoic acidChEBI
(Z,Z)-9,12-Octadecadienoic acidChEBI
9-cis,12-cis-Octadecadienoic acidChEBI
9Z,12Z-Octadecadienoic acidChEBI
Acide cis-linoleiqueChEBI
Acide linoleiqueChEBI
Acido linoleicoChEBI
all-cis-9,12-Octadecadienoic acidChEBI
C18:2 9C, 12C Omega6 todos cis-9,12-octadienoicoChEBI
C18:2, N-6,9 all-cisChEBI
cis,cis-9,12-Octadecadienoic acidChEBI
cis,cis-Linoleic acidChEBI
cis-Delta(9,12)-Octadecadienoic acidChEBI
LAChEBI
Linolic acidChEBI
9-cis,12-cis-OctadecadienoateKegg
(9Z,12Z)-OctadecadienoateGenerator
(Z,Z)-9,12-OctadecadienoateGenerator
9Z,12Z-OctadecadienoateGenerator
all-cis-9,12-OctadecadienoateGenerator
cis,cis-9,12-OctadecadienoateGenerator
cis,cis-LinoleateGenerator
cis-delta(9,12)-OctadecadienoateGenerator
cis-Δ(9,12)-octadecadienoateGenerator
cis-Δ(9,12)-octadecadienoic acidGenerator
LinolateGenerator
LinoleateGenerator
(9Z,12Z)-9,12-OctadecadienoateHMDB
(9Z,12Z)-9,12-Octadecadienoic acidHMDB
9-cis,12-cis-LinoleateHMDB
9-cis,12-cis-Linoleic acidHMDB
9Z,12Z-LinoleateHMDB
9Z,12Z-Linoleic acidHMDB
cis-9,cis-12-OctadecadienoateHMDB
cis-9,cis-12-Octadecadienoic acidHMDB
cis-D9,12-OctadecadienoateHMDB
cis-D9,12-Octadecadienoic acidHMDB
Emersol 315HMDB
Extra linoleic 90HMDB
Polylin 515HMDB
Unifac 6550HMDB
Acid, 9,12-octadecadienoicHMDB
Linoelaidic acidHMDB
Linoleic acid, (e,e)-isomerHMDB
Linoleic acid, (Z,Z)-isomerHMDB
Linoleic acid, (Z,Z)-isomer, 14C-labeledHMDB
Linoleic acid, ammonium salt, (Z,Z)-isomerHMDB
Linoleic acid, potassium salt, (Z,Z)-isomerHMDB
9 trans,12 trans Octadecadienoic acidHMDB
9-trans,12-trans-Octadecadienoic acidHMDB
Linoleic acid, sodium salt, (e,e)-isomerHMDB
Linoleic acid, sodium salt, (Z,Z)-isomerHMDB
trans,trans-9,12-Octadecadienoic acidHMDB
9,12-Octadecadienoic acidHMDB
Linoelaidic acid, (e,Z)-isomerHMDB
Linoleic acid, calcium salt, (Z,Z)-isomerHMDB
Linolelaidic acidHMDB
9,12 Octadecadienoic acidHMDB
Linoleic acid, (Z,e)-isomerHMDB
FA(18:2(9Z,12Z))HMDB
Chemical FormulaC18H32O2
Average Molecular Weight280.4455
Monoisotopic Molecular Weight280.240230268
IUPAC Name(9Z,12Z)-octadeca-9,12-dienoic acid
Traditional Namelinoleic
CAS Registry Number60-33-3
SMILES
CCCCC\C=C/C\C=C/CCCCCCCC(O)=O
InChI Identifier
InChI=1S/C18H32O2/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h6-7,9-10H,2-5,8,11-17H2,1H3,(H,19,20)/b7-6-,10-9-
InChI KeyOYHQOLUKZRVURQ-HZJYTTRNSA-N
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
  • Long-chain fatty acid
  • 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
Ontology
Not AvailableNot Available
Physical Properties
StateLiquid
Experimental Molecular Properties
PropertyValueReference
Melting Point-8.5 °CNot Available
Boiling Point229.00 to 230.00 °C. @ 16.00 mm HgThe Good Scents Company Information System
Water Solubility0.038 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP7.05SANGSTER (1993)
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M-H]-MetCCS_train_neg173.24430932474
[M-H]-Not Available174.3http://allccs.zhulab.cn/database/detail?ID=AllCCS00000206
Predicted Molecular Properties
PropertyValueSource
Water Solubility0.00015 g/LALOGPS
logP7.06ALOGPS
logP6.42ChemAxon
logS-6.3ALOGPS
pKa (Strongest Acidic)4.99ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count14ChemAxon
Refractivity88.52 m³·mol⁻¹ChemAxon
Polarizability35.86 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityNoChemAxon
Rule of FiveNoChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+178.54631661259
DarkChem[M-H]-177.76131661259
AllCCS[M+H]+177.3832859911
AllCCS[M-H]-178.47632859911
DeepCCS[M+H]+178.24830932474
DeepCCS[M-H]-174.58130932474
DeepCCS[M-2H]-210.77330932474
DeepCCS[M+Na]+187.06330932474
AllCCS[M+H]+177.432859911
AllCCS[M+H-H2O]+174.332859911
AllCCS[M+NH4]+180.232859911
AllCCS[M+Na]+181.032859911
AllCCS[M-H]-178.532859911
AllCCS[M+Na-2H]-180.132859911
AllCCS[M+HCOO]-181.932859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
Linoleic acidCCCCC\C=C/C\C=C/CCCCCCCC(O)=O3266.3Standard polar33892256
Linoleic acidCCCCC\C=C/C\C=C/CCCCCCCC(O)=O2067.0Standard non polar33892256
Linoleic acidCCCCC\C=C/C\C=C/CCCCCCCC(O)=O2140.0Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Linoleic acid,1TMS,isomer #1CCCCC/C=C\C/C=C\CCCCCCCC(=O)O[Si](C)(C)C2216.7Semi standard non polar33892256
Linoleic acid,1TBDMS,isomer #1CCCCC/C=C\C/C=C\CCCCCCCC(=O)O[Si](C)(C)C(C)(C)C2459.4Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (1 TMS)splash10-000t-7900000000-b6ee03c4800464c374712014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (1 TMS)splash10-00vi-9300000000-c92dac639ced59eb5dbe2014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-MS (1 TMS)splash10-003s-9700000000-77e67d7b1a161e6ecfa62014-06-16HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-EI-TOF (Non-derivatized)splash10-000t-7900000000-b6ee03c4800464c374712017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-EI-TOF (Non-derivatized)splash10-00vi-9300000000-c92dac639ced59eb5dbe2017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - Linoleic acid GC-MS (Non-derivatized)splash10-003s-9700000000-77e67d7b1a161e6ecfa62017-09-12HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Linoleic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-0007-9750000000-50d69948d56dd2ba6e422017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Linoleic acid GC-MS (1 TMS) - 70eV, Positivesplash10-0079-9631000000-cc93c24bbf14d81ae9b62017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Linoleic acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Linoleic acid GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-05Wishart LabView Spectrum
MSMass Spectrum (Electron Ionization)splash10-015a-9200000000-a193c27810bedf93c4982014-09-20Not AvailableView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid Quattro_QQQ 10V, Positive-QTOF (Annotated)splash10-0f89-0190000000-2be9501b1d4a9fcbd1c02012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid Quattro_QQQ 25V, Positive-QTOF (Annotated)splash10-0uk9-0790000000-7f6e35a591f977bc488e2012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid Quattro_QQQ 40V, Positive-QTOF (Annotated)splash10-0udi-0090000000-c56edc2bbf9d6752aec52012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid FAB-EBEB (JMS-HX/HX 110A, JEOL) , Negative-QTOFsplash10-004i-0090000000-baf4579e26c6b393d3912012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negative-QTOFsplash10-004i-0090000000-815c1682b2c59ba96f102012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negative-QTOFsplash10-004i-0090000000-3406b2b2d5756807e1cd2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negative-QTOFsplash10-004i-0090000000-2fb4975278fa4d118f432012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negative-QTOFsplash10-0a6r-9380000000-37f833673c248405c8ef2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negative-QTOFsplash10-0a4i-9200000000-7d34ed5900a17ffe3f9b2012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 10V, Negative-QTOFsplash10-004i-0090010000-f8df6099e003402f25662017-08-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF , Negative-QTOFsplash10-004i-0091021000-0e44779958d5744d873b2017-08-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 10V, Negative-QTOFsplash10-004i-0091021000-0e44779958d5744d873b2017-08-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 20V, Negative-QTOFsplash10-004i-0091021000-0e44779958d5744d873b2017-08-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 30V, Negative-QTOFsplash10-004i-0091021000-0e44779958d5744d873b2017-08-14HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 10V, Negative-QTOFsplash10-004i-0090010000-f8df6099e003402f25662017-09-12HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF , Negative-QTOFsplash10-004i-0091021000-0e44779958d5744d873b2017-09-12HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 10V, Negative-QTOFsplash10-004i-0090000000-adbf36f0a17c33ac33f82017-09-12HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 20V, Negative-QTOFsplash10-004i-0090000000-2747c83af78732eb6e162017-09-12HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - Linoleic acid ESI-TOF 30V, Negative-QTOFsplash10-004i-0090000000-a0415b1cb63b4562b40e2017-09-12HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 10V, Positive-QTOFsplash10-03di-0090000000-8bdf8d54a29f734942422017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 20V, Positive-QTOFsplash10-0239-4590000000-e5ee57553b064eae2efe2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 40V, Positive-QTOFsplash10-00rf-9830000000-b26ba057a2b4d135b4782017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 10V, Negative-QTOFsplash10-004i-0090000000-f1e9e4b543f7d4f48bf82017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 20V, Negative-QTOFsplash10-01ti-0090000000-665523c6142ff4e39c962017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Linoleic acid 40V, Negative-QTOFsplash10-0a4l-9240000000-dca36a25ad7519d500c32017-09-01Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Experimental 1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)2012-12-04Wishart LabView Spectrum
Experimental 2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, CDCl3, experimental)2012-12-05Wishart LabView Spectrum
Biological Properties
Cellular Locations
  • Cytoplasm
  • Extracellular
  • Membrane (predicted from logP)
Biospecimen Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Feces
  • Saliva
  • Urine
Tissue Locations
  • Adipose Tissue
  • Epidermis
  • Erythrocyte
  • Fibroblasts
  • Intestine
  • Kidney
  • Neuron
  • Placenta
  • Platelet
  • Prostate
  • Skeletal Muscle
  • Spleen
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified23.39 +/- 2.75 uMAdult (>18 years old)FemaleNormal details
BloodDetected and Quantified110 (42-370) uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified83.8 +/- 38 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified193.7 +/- 72.0 uMAdult (>18 years old)Both
Normal
details
BloodDetected and Quantified264 +/- 17.0 uMAdult (>18 years old)Both
Normal
details
BloodDetected and Quantified183.7 +/- 69.9 uMAdult (>18 years old)MaleNormal details
BloodDetected and Quantified207.9 +/- 73.0 uMAdult (>18 years old)FemaleNormal details
BloodDetected and Quantified734.546 +/- 92.710 uMAdult (>18 years old)Male
Normal
details
BloodDetected and Quantified798.729 +/- 99.841 uMAdult (>18 years old)Male
Normal
details
BloodDetected and Quantified927.0964 +/- 110.538 uMAdult (>18 years old)Male
Normal
details
BloodDetected and Quantified930.662 +/- 89.144 uMAdult (>18 years old)Male
Normal
details
BloodDetected and Quantified61 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified17.7 +/- 4.7 uMAdult (>18 years old)BothNormal
    • Geigy Scientific ...
details
BloodDetected and Quantified14.733 +/- 4.331 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified74 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified134 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified192 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified246 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified291 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified308 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified311 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified11.8-21.6 uMAdult (>18 years old)FemaleNormal
    • Geigy Scientific ...
details
BloodDetected and Quantified525 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified563 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified618 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified1021.482 +/- 224.215 uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified1065.519 +/- 201.893 uMAdult (>18 years old)FemaleNormal details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Female
Normal
details
BloodDetected and Quantified15.2 +/- 0.437 uMAdult (>18 years old)BothNormal details
Cerebrospinal Fluid (CSF)Detected and Quantified11.0 +/- 3.0 uMAdult (>18 years old)Not SpecifiedNormal details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedInfant (0-1 year old)Not Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedInfant (0-1 year old)Not Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedChildren (1-13 years old)BothNormal details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
FecesDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedInfant (0-1 year old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedNot SpecifiedNot Specified
Normal
details
SalivaDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
    • Zerihun T. Dame, ...
details
SalivaDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Not SpecifiedNormal details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothNormal details
UrineDetected and Quantified0.05 +/- 0.05 umol/mmol creatinineAdult (>18 years old)BothNormal
    • Geigy Scientific ...
details
UrineDetected and Quantified1.19 +/- 0.61 umol/mmol creatinineAdult (>18 years old)FemaleNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified22.61 +/- 2.80 uMAdult (>18 years old)FemaleGestational diabetes mellitus (GDM) details
BloodDetected and Quantified886.0 +/- 626.6 uMAdult (>18 years old)Both
Cirrhosis
details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Oesophageal cancer
details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Lung cancer
details
BloodDetected and Quantified175.9 +/- 65.0 uMAdult (>18 years old)BothHypertension details
BloodDetected and Quantified159 +/- 12.0 uMAdult (>18 years old)Both
Schizophrenia
details
BloodDetected and Quantified2796.7 +/- 493.9 uMAdult (>18 years old)Not Specified
Isovaleric acidemia
details
BloodDetected and Quantified167.0 +/- 63.8 uMAdult (>18 years old)MaleEssential hypertension details
BloodDetected and Quantified195.2 +/- 64.4 uMAdult (>18 years old)FemaleEssential hypertension details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal cancer details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Schizophrenia
details
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Female
Breast cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothCCD details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothIleal Crohn's disease details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Bothliver cirrhosis details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal Cancer details
FecesDetected but not QuantifiedNot QuantifiedNewborn (0-30 days old)Not Specified
Premature neonates
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal cancer details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Ulcerative colitis
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)FemaleInterstitial cystitis details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal cancer details
UrineDetected and Quantified0.18 +/- 0.45 umol/mmol creatinineAdult (>18 years old)FemaleThyroid cancer details
Associated Disorders and Diseases
Disease References
Gestational diabetes
  1. Min Y, Ghebremeskel K, Lowy C, Thomas B, Crawford MA: Adverse effect of obesity on red cell membrane arachidonic and docosahexaenoic acids in gestational diabetes. Diabetologia. 2004 Jan;47(1):75-81. Epub 2003 Nov 22. [PubMed:14634727 ]
Cirrhosis
  1. Szebeni J, Eskelson C, Sampliner R, Hartmann B, Griffin J, Dormandy T, Watson RR: Plasma fatty acid pattern including diene-conjugated linoleic acid in ethanol users and patients with ethanol-related liver disease. Alcohol Clin Exp Res. 1986 Dec;10(6):647-50. [PubMed:3101533 ]
  2. Huang HJ, Zhang AY, Cao HC, Lu HF, Wang BH, Xie Q, Xu W, Li LJ: Metabolomic analyses of faeces reveals malabsorption in cirrhotic patients. Dig Liver Dis. 2013 Aug;45(8):677-82. doi: 10.1016/j.dld.2013.01.001. Epub 2013 Feb 4. [PubMed:23384618 ]
Hypertension
  1. Wang S, Ma A, Song S, Quan Q, Zhao X, Zheng X: Fasting serum free fatty acid composition, waist/hip ratio and insulin activity in essential hypertensive patients. Hypertens Res. 2008 Apr;31(4):623-32. doi: 10.1291/hypres.31.623. [PubMed:18633173 ]
Essential hypertension
  1. Wang S, Ma A, Song S, Quan Q, Zhao X, Zheng X: Fasting serum free fatty acid composition, waist/hip ratio and insulin activity in essential hypertensive patients. Hypertens Res. 2008 Apr;31(4):623-32. doi: 10.1291/hypres.31.623. [PubMed:18633173 ]
Perillyl alcohol administration for cancer treatment
  1. Lv W, Yang T: Identification of possible biomarkers for breast cancer from free fatty acid profiles determined by GC-MS and multivariate statistical analysis. Clin Biochem. 2012 Jan;45(1-2):127-33. doi: 10.1016/j.clinbiochem.2011.10.011. Epub 2011 Oct 26. [PubMed:22061338 ]
Lung Cancer
  1. Chen Y, Ma Z, Min L, Li H, Wang B, Zhong J, Dai L: Biomarker identification and pathway analysis by serum metabolomics of lung cancer. Biomed Res Int. 2015;2015:183624. doi: 10.1155/2015/183624. Epub 2015 Apr 16. [PubMed:25961003 ]
Schizophrenia
  1. Fukushima T, Iizuka H, Yokota A, Suzuki T, Ohno C, Kono Y, Nishikiori M, Seki A, Ichiba H, Watanabe Y, Hongo S, Utsunomiya M, Nakatani M, Sadamoto K, Yoshio T: Quantitative analyses of schizophrenia-associated metabolites in serum: serum D-lactate levels are negatively correlated with gamma-glutamylcysteine in medicated schizophrenia patients. PLoS One. 2014 Jul 8;9(7):e101652. doi: 10.1371/journal.pone.0101652. eCollection 2014. [PubMed:25004141 ]
  2. Xuan J, Pan G, Qiu Y, Yang L, Su M, Liu Y, Chen J, Feng G, Fang Y, Jia W, Xing Q, He L: Metabolomic profiling to identify potential serum biomarkers for schizophrenia and risperidone action. J Proteome Res. 2011 Dec 2;10(12):5433-43. doi: 10.1021/pr2006796. Epub 2011 Nov 8. [PubMed:22007635 ]
Isovaleric acidemia
  1. Dercksen M, Kulik W, Mienie LJ, Reinecke CJ, Wanders RJ, Duran M: Polyunsaturated fatty acid status in treated isovaleric acidemia patients. Eur J Clin Nutr. 2016 Oct;70(10):1123-1126. doi: 10.1038/ejcn.2016.100. Epub 2016 Jun 22. [PubMed:27329611 ]
Colorectal cancer
  1. Weir TL, Manter DK, Sheflin AM, Barnett BA, Heuberger AL, Ryan EP: Stool microbiome and metabolome differences between colorectal cancer patients and healthy adults. PLoS One. 2013 Aug 6;8(8):e70803. doi: 10.1371/journal.pone.0070803. Print 2013. [PubMed:23940645 ]
  2. Phua LC, Chue XP, Koh PK, Cheah PY, Ho HK, Chan EC: Non-invasive fecal metabonomic detection of colorectal cancer. Cancer Biol Ther. 2014 Apr;15(4):389-97. doi: 10.4161/cbt.27625. Epub 2014 Jan 14. [PubMed:24424155 ]
  3. Ni Y, Xie G, Jia W: Metabonomics of human colorectal cancer: new approaches for early diagnosis and biomarker discovery. J Proteome Res. 2014 Sep 5;13(9):3857-70. doi: 10.1021/pr500443c. Epub 2014 Aug 14. [PubMed:25105552 ]
  4. Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ]
  5. Sinha R, Ahn J, Sampson JN, Shi J, Yu G, Xiong X, Hayes RB, Goedert JJ: Fecal Microbiota, Fecal Metabolome, and Colorectal Cancer Interrelations. PLoS One. 2016 Mar 25;11(3):e0152126. doi: 10.1371/journal.pone.0152126. eCollection 2016. [PubMed:27015276 ]
  6. Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]
  7. Wang X, Wang J, Rao B, Deng L: Gut flora profiling and fecal metabolite composition of colorectal cancer patients and healthy individuals. Exp Ther Med. 2017 Jun;13(6):2848-2854. doi: 10.3892/etm.2017.4367. Epub 2017 Apr 20. [PubMed:28587349 ]
Bladder infections
  1. Braundmeier-Fleming A, Russell NT, Yang W, Nas MY, Yaggie RE, Berry M, Bachrach L, Flury SC, Marko DS, Bushell CB, Welge ME, White BA, Schaeffer AJ, Klumpp DJ: Stool-based biomarkers of interstitial cystitis/bladder pain syndrome. Sci Rep. 2016 May 18;6:26083. doi: 10.1038/srep26083. [PubMed:27188581 ]
Ulcerative colitis
  1. Azario I, Pievani A, Del Priore F, Antolini L, Santi L, Corsi A, Cardinale L, Sawamoto K, Kubaski F, Gentner B, Bernardo ME, Valsecchi MG, Riminucci M, Tomatsu S, Aiuti A, Biondi A, Serafini M: Neonatal umbilical cord blood transplantation halts skeletal disease progression in the murine model of MPS-I. Sci Rep. 2017 Aug 25;7(1):9473. doi: 10.1038/s41598-017-09958-9. [PubMed:28842642 ]
Thyroid cancer
  1. Kim KM, Jung BH, Lho DS, Chung WY, Paeng KJ, Chung BC: Alteration of urinary profiles of endogenous steroids and polyunsaturated fatty acids in thyroid cancer. Cancer Lett. 2003 Dec 30;202(2):173-9. [PubMed:14643447 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB006287
KNApSAcK IDC00001224
Chemspider ID4444105
KEGG Compound IDC01595
BioCyc IDLINOLEIC_ACID
BiGG ID37956
Wikipedia LinkLinoleic_acid
METLIN ID191
PubChem Compound5280450
PDB IDNot Available
ChEBI ID17351
Food Biomarker OntologyNot Available
VMH IDLNLC
MarkerDB IDMDB00000213
Good Scents IDrw1045901
References
Synthesis ReferenceWalborsky, Harry M.; Davis, Robert H.; Howton, David R. A total synthesis of linoleic acid. Journal of the American Chemical Society (1951), 73 2590-4.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Sreekumar A, Poisson LM, Rajendiran TM, Khan AP, Cao Q, Yu J, Laxman B, Mehra R, Lonigro RJ, Li Y, Nyati MK, Ahsan A, Kalyana-Sundaram S, Han B, Cao X, Byun J, Omenn GS, Ghosh D, Pennathur S, Alexander DC, Berger A, Shuster JR, Wei JT, Varambally S, Beecher C, Chinnaiyan AM: Metabolomic profiles delineate potential role for sarcosine in prostate cancer progression. Nature. 2009 Feb 12;457(7231):910-4. doi: 10.1038/nature07762. [PubMed:19212411 ]
  2. Hoffmann GF, Meier-Augenstein W, Stockler S, Surtees R, Rating D, Nyhan WL: Physiology and pathophysiology of organic acids in cerebrospinal fluid. J Inherit Metab Dis. 1993;16(4):648-69. [PubMed:8412012 ]
  3. Schurer NY, Stremmel W, Grundmann JU, Schliep V, Kleinert H, Bass NM, Williams ML: Evidence for a novel keratinocyte fatty acid uptake mechanism with preference for linoleic acid: comparison of oleic and linoleic acid uptake by cultured human keratinocytes, fibroblasts and a human hepatoma cell line. Biochim Biophys Acta. 1994 Feb 10;1211(1):51-60. [PubMed:8123682 ]
  4. Valianpour F, Wanders RJ, Overmars H, Vaz FM, Barth PG, van Gennip AH: Linoleic acid supplementation of Barth syndrome fibroblasts restores cardiolipin levels: implications for treatment. J Lipid Res. 2003 Mar;44(3):560-6. Epub 2002 Dec 16. [PubMed:12562862 ]
  5. Horrobin DF: Essential fatty acid metabolism and its modification in atopic eczema. Am J Clin Nutr. 2000 Jan;71(1 Suppl):367S-72S. [PubMed:10617999 ]
  6. Imokawa G, Yada Y, Higuchi K, Okuda M, Ohashi Y, Kawamata A: Pseudo-acylceramide with linoleic acid produces selective recovery of diminished cutaneous barrier function in essential fatty acid-deficient rats and has an inhibitory effect on epidermal hyperplasia. J Clin Invest. 1994 Jul;94(1):89-96. [PubMed:8040295 ]
  7. Kawajiri H, Hsi LC, Kamitani H, Ikawa H, Geller M, Ward T, Eling TE, Glasgow WC: Arachidonic and linoleic acid metabolism in mouse intestinal tissue: evidence for novel lipoxygenase activity. Arch Biochem Biophys. 2002 Feb 1;398(1):51-60. [PubMed:11811948 ]
  8. Iso H, Sato S, Umemura U, Kudo M, Koike K, Kitamura A, Imano H, Okamura T, Naito Y, Shimamoto T: Linoleic acid, other fatty acids, and the risk of stroke. Stroke. 2002 Aug;33(8):2086-93. [PubMed:12154268 ]
  9. Seidel D, Heipertz R, Weisner B: Cerebrospinal fluid lipids in demyelinating disease. II. Linoleic acid as an index of impaired blood-CSF barrier. J Neurol. 1980 Jan;222(3):177-82. [PubMed:6153705 ]
  10. Salo P, Seppanen-Laakso T, Laakso I, Seppanen R, Niinikoski H, Viikari J, Simell O: Low-saturated fat, low-cholesterol diet in 3-year-old children: effect on intake and composition of trans fatty acids and other fatty acids in serum phospholipid fraction-The STRIP study. Special Turku coronary Risk factor Intervention Project for children. J Pediatr. 2000 Jan;136(1):46-52. [PubMed:10636973 ]
  11. Grimsgaard S, Bonaa KH, Jacobsen BK, Bjerve KS: Plasma saturated and linoleic fatty acids are independently associated with blood pressure. Hypertension. 1999 Sep;34(3):478-83. [PubMed:10489397 ]
  12. Elshenawy S, Pinney SE, Stuart T, Doulias PT, Zura G, Parry S, Elovitz MA, Bennett MJ, Bansal A, Strauss JF 3rd, Ischiropoulos H, Simmons RA: The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth. Int J Mol Sci. 2020 Feb 4;21(3). pii: ijms21031043. doi: 10.3390/ijms21031043. [PubMed:32033212 ]

Only showing the first 10 proteins. There are 52 proteins in total.

Enzymes

General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. This isozyme hydrolyzes more efficiently L-alpha-1-palmitoyl-2-oleoyl phosphatidylcholine than L-alpha-1-palmitoyl-2-arachidonyl phosphatidylcholine, L-alpha-1-palmitoyl-2-arachidonyl phosphatidylethanolamine, or L-alpha-1-stearoyl-2-arachidonyl phosphatidylinositol. May be involved in the production of lung surfactant, the remodeling or regulation of cardiac muscle.
Gene Name:
PLA2G5
Uniprot ID:
P39877
Molecular weight:
15674.065
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Hydrolyzes phosphatidylglycerol versus phosphatidylcholine with a 15-fold preference.
Gene Name:
PLA2G2F
Uniprot ID:
Q9BZM2
Molecular weight:
23256.29
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in metabolic process
Specific function:
Selectively hydrolyzes arachidonyl phospholipids in the sn-2 position releasing arachidonic acid. Together with its lysophospholipid activity, it is implicated in the initiation of the inflammatory response.
Gene Name:
PLA2G4A
Uniprot ID:
P47712
Molecular weight:
85210.19
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
Gene Name:
PLA2G1B
Uniprot ID:
P04054
Molecular weight:
16359.535
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
Not known; does not seem to have catalytic activity.
Gene Name:
PLA2G12B
Uniprot ID:
Q9BX93
Molecular weight:
Not Available
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Has a powerful potency for releasing arachidonic acid from cell membrane phospholipids. Prefers phosphatidylethanolamine and phosphatidylcholine liposomes to those of phosphatidylserine.
Gene Name:
PLA2G10
Uniprot ID:
O15496
Molecular weight:
18153.04
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Has a preference for arachidonic-containing phospholipids.
Gene Name:
PLA2G2E
Uniprot ID:
Q9NZK7
Molecular weight:
15988.525
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Does not exhibit detectable activity toward sn-2-arachidonoyl- or linoleoyl-phosphatidylcholine or -phosphatidylethanolamine.
Gene Name:
PLA2G12A
Uniprot ID:
Q9BZM1
Molecular weight:
21066.99
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in metabolic process
Specific function:
Catalyzes the release of fatty acids from phospholipids. It has been implicated in normal phospholipid remodeling, nitric oxide-induced or vasopressin-induced arachidonic acid release and in leukotriene and prostaglandin production. May participate in fas mediated apoptosis and in regulating transmembrane ion flux in glucose-stimulated B-cells. Has a role in cardiolipin (CL) deacylation. Required for both speed and directionality of monocyte MCP1/CCL2-induced chemotaxis through regulation of F-actin polymerization at the pseudopods. Isoform ankyrin-iPLA2-1 and isoform ankyrin-iPLA2-2, which lack the catalytic domain, are probably involved in the negative regulation of iPLA2 activity.
Gene Name:
PLA2G6
Uniprot ID:
O60733
Molecular weight:
84092.635
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails
General function:
Involved in phospholipase A2 activity
Specific function:
Thought to participate in the regulation of the phospholipid metabolism in biomembranes including eicosanoid biosynthesis. Catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides.
Gene Name:
PLA2G2A
Uniprot ID:
P14555
Molecular weight:
16082.525
Reactions
Phosphatidylcholine + Water → 1-Acyl-sn-glycero-3-phosphocholine + Linoleic aciddetails

Only showing the first 10 proteins. There are 52 proteins in total.