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Record Information
Version4.0
StatusExpected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2019-07-23 05:44:05 UTC
HMDB IDHMDB0000351
Secondary Accession Numbers
  • HMDB00351
Metabolite Identification
Common Name(2S,3R)-3-Hydroxy-2-methylbutanoic acid
Description3-Hydroxy-2-methylbutanoic acid (HMBA) is a normal urinary metabolite involved in isoleucine catabolism, beta-oxidation of fatty acids, and ketogenesis. HMDB is excreted in abnormally high amounts in beta-ketothiolase deficiency. Differences in the enantiomeric ratio of HMBA may originate from the enantioselectivity of different enzyme systems (PMID: 10755375 ).
Structure
Data?1563860645
Synonyms
ValueSource
3-Hydroxy-2-methyl-[R-(R,S)]-butanoateGenerator
3-Hydroxy-2-methyl-[R-(r*,s*)]-butanoateHMDB
3-Hydroxy-2-methyl-[R-(r*,s*)]-butanoic acidHMDB
(2S,3R)-3-Hydroxy-2-methylbutanoic acidHMDB
(2S,3R)-3-Hydroxy-2-methylbutyric acidHMDB
(2S,3R)-Nilic acidHMDB
3-Hydroxy-2-methyl-[R-(R,S)]-butanoic acidHMDB
HMBAHMDB
Chemical FormulaC5H10O3
Average Molecular Weight118.1311
Monoisotopic Molecular Weight118.062994186
IUPAC Name(2S,3R)-3-hydroxy-2-methylbutanoic acid
Traditional Name(2S,3R)-3-hydroxy-2-methylbutanoic acid
CAS Registry Number71526-30-2
SMILES
C[C@@H](O)[C@H](C)C(O)=O
InChI Identifier
InChI=1S/C5H10O3/c1-3(4(2)6)5(7)8/h3-4,6H,1-2H3,(H,7,8)/t3-,4+/m0/s1
InChI KeyVEXDRERIMPLZLU-IUYQGCFVSA-N
Chemical Taxonomy
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
Substituents
  • Beta-hydroxy acid
  • Branched fatty acid
  • Hydroxy fatty acid
  • Short-chain hydroxy acid
  • Methyl-branched fatty acid
  • Hydroxy acid
  • Secondary alcohol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organooxygen compound
  • Alcohol
  • Carbonyl group
  • Hydrocarbon derivative
  • Organic oxide
  • Organic oxygen compound
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Ontology
Disposition

Route of exposure:

Biological location:

Source:

Process

Naturally occurring process:

Role

Biological role:

Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
Water Solubility336 g/LALOGPS
logP-0.13ALOGPS
logP0.16ChemAxon
logS0.45ALOGPS
pKa (Strongest Acidic)4.51ChemAxon
pKa (Strongest Basic)-2.8ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity28.04 m³·mol⁻¹ChemAxon
Polarizability11.76 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0097-9100000000-4296c67313a78a015074JSpectraViewer | MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (2 TMS) - 70eV, Positivesplash10-00y1-9820000000-7256ed8afed29ebf4daaJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-0r0r-9200000000-a7d6bf6e90c8c752f69cJSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-0a4j-9000000000-fe9a2716010ffb94cff8JSpectraViewer | MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-0a4l-9000000000-715b545170085466a6b2JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0uxr-3900000000-d8f24d02712f429591a7JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0zgi-9800000000-0821ba5748054e7de369JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9000000000-e5b2f743cb4dd5e99ec5JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-5900000000-587bb9b1fdf10856b3a1JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-05fr-9100000000-a33491d8a46967cdd2d3JSpectraViewer | MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9000000000-1ec2b5bb3af9f3c925caJSpectraViewer | MoNA
Biological Properties
Cellular LocationsNot Available
Biospecimen LocationsNot Available
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB021974
KNApSAcK IDNot Available
Chemspider ID13628066
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN ID5340
PubChem Compound12313370
PDB IDNot Available
ChEBI IDNot Available
References
Synthesis ReferenceNeri, Claudia; Williams, Jonathan M. J. Racemic auxiliaries: applications to asymmetric synthesis. Tetrahedron Letters (2002), 43(23), 4257-4260.
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Heil M, Podebrad F, Prado E, Beck T, Mosand A, Sewell AC, Bohles H, Lehnert W: Enantioselective analysis of ketone bodies in patients with beta-ketothiolase deficiency, medium-chain acyl coenzyme A dehydrogenase deficiency and ketonemic vomiting. J Chromatogr B Biomed Sci Appl. 2000 Mar 10;739(2):313-24. [PubMed:10755375 ]