Record Information
Version1.0
Creation Date2016-07-13 19:45:00 UTC
Update Date2020-03-19 21:20:55 UTC
LmdbLMDB00220
Secondary Accession NumbersNone
Metabolite Identification
Common NameKetoleucine
DescriptionKetoleucine, also known as 2-oxoisocaproate or 2-oxoleucine, belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms. Ketoleucine is an extremely weak basic (essentially neutral) compound (based on its pKa). Ketoleucine exists in all living species, ranging from bacteria to humans. Outside of the human body, Ketoleucine has been detected, but not quantified in, several different foods, such as oriental wheats, nances, corianders, quinces, and soursops. This could make ketoleucine a potential biomarker for the consumption of these foods. Ketoleucine is a potentially toxic compound. Ketoleucine, with regard to humans, has been found to be associated with several diseases such as eosinophilic esophagitis, periodontal probing depth, rheumatoid arthritis, and gout; ketoleucine has also been linked to the inborn metabolic disorder maple syrup urine disease.
Structure
Thumb
Synonyms
ValueSource
2-oxo-4-METHYLPENTANOIC ACIDChEBI
2-OxoisocaproateChEBI
4-Methyl-2-oxopentanoateChEBI
4-Methyl-2-oxovaleric acidChEBI
alpha-Ketoisocaproic acidChEBI
2-oxo-4-METHYLPENTANOateGenerator
2-Oxoisocaproic acidGenerator
4-Methyl-2-oxopentanoic acidGenerator
4-Methyl-2-oxovalerateGenerator
a-KetoisocaproateGenerator
a-Ketoisocaproic acidGenerator
alpha-KetoisocaproateGenerator
Α-ketoisocaproateGenerator
Α-ketoisocaproic acidGenerator
2-Keto-4-methylvalerateHMDB
2-Keto-4-methylvaleric acidHMDB
2-KetoisocaproateHMDB
2-Ketoisocaproic acidHMDB
2-oxo-4-MethylvalerateHMDB
2-oxo-4-Methylvaleric acidHMDB
2-OxoleucineHMDB
4-Methyl-2-oxo-valerateHMDB
4-Methyl-2-oxo-valeric acidHMDB
a-KetoisocapronateHMDB
a-Ketoisocapronic acidHMDB
a-OxoisocaproateHMDB
a-Oxoisocaproic acidHMDB
alpha-Keto-isocaproateHMDB
alpha-Keto-isocaproic acidHMDB
alpha-KetoisocapronateHMDB
alpha-Ketoisocapronic acidHMDB
alpha-OxoisocaproateHMDB
alpha-Oxoisocaproic acidHMDB
KetoisocaproateHMDB
Ketoisocaproic acidHMDB
MethyloxovalerateHMDB
Methyloxovaleric acidHMDB
OxoisocaproateHMDB
Oxoisocaproic acidHMDB
Keto-leucineHMDB
Chemical FormulaC6H10O3
Average Molecular Weight130.1418
Monoisotopic Molecular Weight130.062994186
IUPAC Name4-methyl-2-oxopentanoic acid
Traditional Nameketoisocaproate
CAS Registry Number816-66-0
SMILES
CC(C)CC(=O)C(O)=O
InChI Identifier
InChI=1S/C6H10O3/c1-4(2)3-5(7)6(8)9/h4H,3H2,1-2H3,(H,8,9)
InChI KeyBKAJNAXTPSGJCU-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as short-chain keto acids and derivatives. These are keto acids with an alkyl chain the contains less than 6 carbon atoms.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassKeto acids and derivatives
Sub ClassShort-chain keto acids and derivatives
Direct ParentShort-chain keto acids and derivatives
Alternative Parents
Substituents
  • Branched fatty acid
  • Methyl-branched fatty acid
  • Short-chain keto acid
  • Alpha-keto acid
  • Fatty acyl
  • Alpha-hydroxy ketone
  • Ketone
  • Carboxylic acid derivative
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Carbonyl group
  • Hydrocarbon derivative
  • Organic oxygen compound
  • Organooxygen compound
  • Organic oxide
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
StatusDetected and Quantified
OriginNot Available
BiofunctionNot Available
ApplicationNot Available
Cellular locationsNot Available
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
logP0.82ALOGPS
logP1.5ChemAxon
logS-1.3ALOGPS
pKa (Strongest Acidic)3.53ChemAxon
pKa (Strongest Basic)-9.7ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area54.37 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity31.77 m³·mol⁻¹ChemAxon
Polarizability13 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-000i-9400000000-49d055f04bfe1877ac5bSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-029j-8930000000-c6c54bf6ee2995a2195bSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-0002-1910000000-0ba38257e25873312809Spectrum
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-0a5c-4930000000-61247369a805fa2a77a7Spectrum
GC-MSGC-MS Spectrum - GC-MS (1 MEOX; 1 TMS)splash10-000i-9510000000-8bfc5a54e29f65edf361Spectrum
GC-MSGC-MS Spectrum - GC-MS (1 MEOX; 1 TMS)splash10-00lj-9620000000-aa8409ceb2359d903f38Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-000i-9400000000-49d055f04bfe1877ac5bSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-029j-8930000000-c6c54bf6ee2995a2195bSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-0002-1910000000-0ba38257e25873312809Spectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-0a5c-4930000000-61247369a805fa2a77a7Spectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-000i-9510000000-8bfc5a54e29f65edf361Spectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-00lj-9620000000-aa8409ceb2359d903f38Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00ks-7930000000-4e9cfd715fa884d30e7fSpectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-000i-9500000000-709ebcb57f006703c269Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-9000000000-e410bce23706f826f8ddSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-0006-9400000000-c4f06cea1e27a2b24660Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_2) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_1) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_2) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0006-9000000000-bed7ac074a60210971e3Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-014i-9200000000-2fa08d2b4df406cf63eaSpectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-014j-9000000000-045be8e8dca3f93d45baSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Negativesplash10-004i-0900000000-237fa8ad6bfb929be31eSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Negativesplash10-004r-9700000000-8d38d24fce78b1ff13e6Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Negativesplash10-0a59-9000000000-759cfc0817917283d1a5Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Negativesplash10-0a4l-9000000000-2a068ada71fbe0a5a988Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Negativesplash10-0a4l-9000000000-58e61e31f3c96d84d799Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-004i-0900000000-237fa8ad6bfb929be31eSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-004r-9700000000-8d38d24fce78b1ff13e6Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a59-9000000000-759cfc0817917283d1a5Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a4l-9000000000-2a068ada71fbe0a5a988Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ , negativesplash10-0a4l-9000000000-58e61e31f3c96d84d799Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT , negativesplash10-004i-0900000000-556a0d1cf568609752d1Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-IT , negativesplash10-004r-5900000000-20f6923c8ed45e9fa088Spectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-004i-0900000000-b66d521478c92e2d77d0Spectrum
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-004i-0900000000-9c3a698d9f28af574ef6Spectrum
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-03di-9000000000-47ced70de4860e900283Spectrum
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-03xr-7900000000-0461a5a56e36a03fe522Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-08gr-7900000000-31021fda89eb6535185fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0btm-9200000000-3bf5df4b557ef87267f4Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9000000000-37839bf70647d24b94a4Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-4900000000-796467909d1d4c087a07Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-01ri-9400000000-0abcd021721f32c10e42Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-015l-9000000000-5c33a47dfeb09a182983Spectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
1D NMR1H NMR SpectrumNot AvailableSpectrum
1D NMR13C NMR SpectrumNot AvailableSpectrum
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableSpectrum
Biological Properties
Cellular LocationsNot Available
Biofluid Locations and Tissue Locations
  • Serum
  • Urine
Concentrations
BiofluidStatusValueConditionSpeciesReferenceDetails
SerumDetected and Quantified19.67 +/- 19.13 uMNot AvailableOvine
    • Candidate serum m...
details
SerumDetected but not QuantifiedNot ApplicableNot AvailablePorcine details
UrineDetected but not QuantifiedNot ApplicableNot AvailablePorcine details
DrugBank IDDB03229
HMDB IDHMDB0000695
FooDB IDFDB030510
Phenol Explorer IDNot Available
KNApSAcK IDC00019677
BiGG ID34334
BioCyc ID2K-4CH3-PENTANOATE
METLIN ID5663
PDB IDNot Available
Wikipedia LinkNot Available
Chemspider ID69
ChEBI ID48430
PubChem Compound ID70
Kegg Compound IDC00233
YMDB IDYMDB00388
ECMDB IDECMDB00695
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Sgaravatti AM, Rosa RB, Schuck PF, Ribeiro CA, Wannmacher CM, Wyse AT, Dutra-Filho CS, Wajner M: Inhibition of brain energy metabolism by the alpha-keto acids accumulating in maple syrup urine disease. Biochim Biophys Acta. 2003 Nov 20;1639(3):232-8. [14636955 ]