Record Information
Creation date2015-05-07 18:38:44 UTC
Update date2018-05-29 01:54:50 UTC
Primary IDFDB030115
Secondary Accession Numbers
  • FDB011983
Chemical Information
FooDB Name(2S)-2-isopropylmalate
Description2-isopropylmalic acid, also known as (2s)-2-hydroxy-2-isopropylsuccinic acid or (2s)-2-isopropylmalate, is a member of the class of compounds known as hydroxy fatty acids. Hydroxy fatty acids are fatty acids in which the chain bears a hydroxyl group. Thus, 2-isopropylmalic acid is considered to be a fatty acid lipid molecule. 2-isopropylmalic acid is soluble (in water) and a weakly acidic compound (based on its pKa). 2-isopropylmalic acid can be found in a number of food items such as sourdough, garden onion, oat, and bitter gourd, which makes 2-isopropylmalic acid a potential biomarker for the consumption of these food products. 2-isopropylmalic acid can be found primarily in feces, saliva, and urine. 2-isopropylmalic acid exists in all living species, ranging from bacteria to humans. Isopropylmalic acid (isopropylmalate) is an intermediate in the biosynthesis of leucine, synthesized from oxoisovalerate by 2-isopropylmalate synthase and converted into isopropyl-3-oxosuccinate by 3-isopropylmalate dehydrogenase. Two isomers are important, the 2- and 3-isopropyl derivatives, and these are interconverted by isopropylmalate dehydratase .
CAS Number3237-44-3
(2S)-2-Hydroxy-2-isopropylsuccinic acidChEBI
(3S)-3-Carboxy-3-hydroxy-4-methylpentanoic acidChEBI
(3S)-3-Carboxy-3-hydroxyisocaproic acidChEBI
(S)-2-Hydroxy-2-(isopropyl)succinic acidChEBI
(2S)-2-Isopropylmalic acidGenerator
3-Carboxy-3-hydroxy-4-methylpentanoic acidGenerator
3-Carboxy-3-hydroxyisocaproic acidGenerator
2-Hydroxy-2-isopropylsuccinic acidHMDB
2-Isopropyl-2-hydroxybutanedioic acidHMDB
2-Isopropyl-malic acidHMDB
a-Isopropylmalic acidHMDB
alpha-Isopropylmalic acidHMDB
Predicted Properties
Water Solubility181 g/LALOGPS
pKa (Strongest Acidic)3.63ChemAxon
pKa (Strongest Basic)-4.1ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area94.83 ŲChemAxon
Rotatable Bond Count4ChemAxon
Refractivity38.58 m³·mol⁻¹ChemAxon
Polarizability16.37 ųChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Chemical FormulaC7H12O5
IUPAC name(2S)-2-hydroxy-2-(propan-2-yl)butanedioic acid
InChI IdentifierInChI=1S/C7H12O5/c1-4(2)7(12,6(10)11)3-5(8)9/h4,12H,3H2,1-2H3,(H,8,9)(H,10,11)/t7-/m0/s1
Isomeric SMILESCC(C)[C@@](O)(CC(O)=O)C(O)=O
Average Molecular Weight176.1672
Monoisotopic Molecular Weight176.068473494
Description belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassFatty Acyls
Sub ClassFatty acids and conjugates
Direct ParentHydroxy fatty acids
Alternative Parents
  • Branched fatty acid
  • Methyl-branched fatty acid
  • Short-chain hydroxy acid
  • Hydroxy fatty acid
  • Alpha-hydroxy acid
  • Dicarboxylic acid or derivatives
  • Hydroxy acid
  • Tertiary alcohol
  • Carboxylic acid
  • Carboxylic acid derivative
  • Alcohol
  • Hydrocarbon derivative
  • Carbonyl group
  • Organic oxide
  • Organic oxygen compound
  • Organooxygen compound
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
OntologyShould have ontology for this compound
Physico-Chemical Properties - Experimental
Physico-Chemical Properties - Experimental
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
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0006-9400000000-1c869c73651e7e4e5ddaView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-00bl-9134000000-30fabfd0c26c38444fffView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Negative (Annotated)splash10-004i-0900000000-1bb48f5ddadbf88b8f6cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Negative (Annotated)splash10-00kr-9400000000-5df8f3f29d2e8a962cacView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Negative (Annotated)splash10-05n0-9200000000-c62b1543d0e6a41388f1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0690-1900000000-3b83300261e0daab2ef1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0006-9700000000-2652db028b01706ac042View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-00di-9300000000-808bda4307e96bcfcc83View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-003r-2900000000-9fa33cd594a81b5d67cdView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-055r-9700000000-8ab90438d0e6c9b7d0beView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4r-9100000000-41e1c40b755f8bfaf000View in MoNA
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
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
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
Biological Effects and Interactions
Health Effects / BioactivitiesNot Available
EnzymesNot Available
PathwaysNot Available
MetabolismNot Available
BiosynthesisNot Available
Organoleptic Properties
FlavoursNot Available
MSDSNot Available
Synthesis ReferenceNot Available
General ReferenceNot Available
Content Reference