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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2023-02-21 17:15:30 UTC
HMDB IDHMDB0001172
Secondary Accession Numbers
  • HMDB01172
Metabolite Identification
Common Name2-Methyl-3-oxopropanoic acid
Description2-Methyl-3-oxopropanoic acid, also known as methylmalonate semialdehyde or 3-oxo-2-methylpropanoate, belongs to the class of organic compounds known as 1,3-dicarbonyl compounds. These are carbonyl compounds with the generic formula O=C(R)C(H)C(R')=O, where R and R' can be any group. The 2-methyl-3-oxo derivative of propanoic acid. 2-Methyl-3-oxopropanoic acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. 2-Methyl-3-oxopropanoic acid exists in all living organisms, ranging from bacteria to humans.
Structure
Data?1676999730
Synonyms
ValueSource
2-Methyl-3-oxopropanoateChEBI
3-oxo-2-MethylpropanoateChEBI
Methylmalonate semialdehydeChEBI
3-oxo-2-Methylpropanoic acidGenerator
Methylmalonic acid semialdehydeGenerator
CH3-Malonate-semialdehydeHMDB
Methylmalonate-semialdehydeHMDB
2-Methyl-3-oxo-propanoateHMDB
2-Methyl-3-oxopropanoic acidGenerator
Chemical FormulaC4H6O3
Average Molecular Weight102.0886
Monoisotopic Molecular Weight102.031694058
IUPAC Name2-methyl-3-oxopropanoic acid
Traditional Namemethylmalonate semialdehyde
CAS Registry Number6236-08-4
SMILES
CC(C=O)C(O)=O
InChI Identifier
InChI=1S/C4H6O3/c1-3(2-5)4(6)7/h2-3H,1H3,(H,6,7)
InChI KeyVOKUMXABRRXHAR-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as 1,3-dicarbonyl compounds. These are carbonyl compounds with the generic formula O=C(R)C(H)C(R')=O, where R and R' can be any group.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbonyl compounds
Direct Parent1,3-dicarbonyl compounds
Alternative Parents
Substituents
  • 1,3-dicarbonyl compound
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxide
  • Hydrocarbon derivative
  • Short-chain aldehyde
  • Aldehyde
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility266 g/LALOGPS
logP0ALOGPS
logP0.053ChemAxon
logS0.42ALOGPS
pKa (Strongest Acidic)3.98ChemAxon
pKa (Strongest Basic)-7.2ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area54.37 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity22.64 m³·mol⁻¹ChemAxon
Polarizability9.15 ųChemAxon
Number of Rings0ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+120.59731661259
DarkChem[M-H]-113.66731661259
AllCCS[M+H]+126.38832859911
AllCCS[M-H]-122.99932859911
DeepCCS[M+H]+126.27630932474
DeepCCS[M-H]-123.47830932474
DeepCCS[M-2H]-159.9130932474
DeepCCS[M+Na]+134.49830932474
AllCCS[M+H]+126.432859911
AllCCS[M+H-H2O]+122.132859911
AllCCS[M+NH4]+130.432859911
AllCCS[M+Na]+131.632859911
AllCCS[M-H]-123.032859911
AllCCS[M+Na-2H]-126.932859911
AllCCS[M+HCOO]-131.232859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
2-Methyl-3-oxopropanoic acidCC(C=O)C(O)=O2131.1Standard polar33892256
2-Methyl-3-oxopropanoic acidCC(C=O)C(O)=O811.7Standard non polar33892256
2-Methyl-3-oxopropanoic acidCC(C=O)C(O)=O918.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
2-Methyl-3-oxopropanoic acid,1TMS,isomer #1CC(C=O)C(=O)O[Si](C)(C)C1004.5Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,1TMS,isomer #2CC(=CO[Si](C)(C)C)C(=O)O1121.8Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TMS,isomer #1CC(=CO[Si](C)(C)C)C(=O)O[Si](C)(C)C1222.1Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TMS,isomer #1CC(=CO[Si](C)(C)C)C(=O)O[Si](C)(C)C1140.6Standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TMS,isomer #1CC(=CO[Si](C)(C)C)C(=O)O[Si](C)(C)C1241.6Standard polar33892256
2-Methyl-3-oxopropanoic acid,1TBDMS,isomer #1CC(C=O)C(=O)O[Si](C)(C)C(C)(C)C1224.8Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,1TBDMS,isomer #2CC(=CO[Si](C)(C)C(C)(C)C)C(=O)O1366.4Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TBDMS,isomer #1CC(=CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C1627.5Semi standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TBDMS,isomer #1CC(=CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C1567.2Standard non polar33892256
2-Methyl-3-oxopropanoic acid,2TBDMS,isomer #1CC(=CO[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C1564.5Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-3-oxopropanoic acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a4i-9000000000-8b181508e3ce65539b462017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-3-oxopropanoic acid GC-MS (1 TMS) - 70eV, Positivesplash10-00di-9600000000-15e42a2e09123d5f22ad2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-3-oxopropanoic acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Methyl-3-oxopropanoic acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 10V, Positive-QTOFsplash10-0zg0-9400000000-e46caa43ec4709ce76862015-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 20V, Positive-QTOFsplash10-0a4i-9000000000-6c1632ad1d79839902622015-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 40V, Positive-QTOFsplash10-0a4i-9000000000-6762a2cf4db52c84495c2015-09-14Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 10V, Negative-QTOFsplash10-0udi-2900000000-9066dc83487b73946c992015-09-15Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 20V, Negative-QTOFsplash10-0a4i-9200000000-8fde49823ba2083f055f2015-09-15Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 40V, Negative-QTOFsplash10-0a4i-9000000000-a320f14ddfc09e7989382015-09-15Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 10V, Negative-QTOFsplash10-0uk9-8900000000-0a76d84228c38b1cfe1d2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 20V, Negative-QTOFsplash10-0pb9-9300000000-dd49ef94a8379e8517cd2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 40V, Negative-QTOFsplash10-0a4i-9000000000-4f42a2a7dc0b37e742da2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 10V, Positive-QTOFsplash10-0a4i-9000000000-b5c480248a004c0694162021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 20V, Positive-QTOFsplash10-0a4i-9000000000-6de8f6b91e5efd633c282021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Methyl-3-oxopropanoic acid 40V, Positive-QTOFsplash10-0a4r-9000000000-a0e9ace5e33e8c50915e2021-09-24Wishart LabView Spectrum

IR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M-H]-)2023-02-03FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)2023-02-03FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)2023-02-03FELIX labView Spectrum
Biological Properties
Cellular Locations
  • Mitochondria
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
FooDB IDFDB022464
KNApSAcK IDNot Available
Chemspider ID290
KEGG Compound IDC00349
BioCyc IDNot Available
BiGG ID34698
Wikipedia Link2-Methyl-3-oxopropanoic acid
METLIN ID6053
PubChem Compound296
PDB IDNot Available
ChEBI ID16256
Food Biomarker OntologyNot Available
VMH ID2MOP
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceRobinson, Wm. G.; Coon, Minor J. Purification and properties of b-hydroxyisobutyric dehydrogenase. Journal of Biological Chemistry (1957), 225 511-21.
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Involved in oxidoreductase activity
Specific function:
Plays a role in valine and pyrimidine metabolism. Binds fatty acyl-CoA.
Gene Name:
ALDH6A1
Uniprot ID:
Q02252
Molecular weight:
57839.31
Reactions
2-Methyl-3-oxopropanoic acid + Coenzyme A + Water + NAD → Propionyl-CoA + Hydrogen carbonate + NADHdetails
General function:
Involved in oxidoreductase activity
Specific function:
Not Available
Gene Name:
AOX1
Uniprot ID:
Q06278
Molecular weight:
147916.735
General function:
Involved in 4-aminobutyrate transaminase activity
Specific function:
Catalyzes the conversion of gamma-aminobutyrate and L-beta-aminoisobutyrate to succinate semialdehyde and methylmalonate semialdehyde, respectively. Can also convert delta-aminovalerate and beta-alanine.
Gene Name:
ABAT
Uniprot ID:
P80404
Molecular weight:
56438.405
Reactions
(S)-beta-Aminoisobutyric acid + Oxoglutaric acid → 2-Methyl-3-oxopropanoic acid + L-Glutamic aciddetails
General function:
Involved in oxidoreductase activity
Specific function:
Not Available
Gene Name:
ALDH2
Uniprot ID:
P05091
Molecular weight:
56380.93
General function:
Involved in oxidoreductase activity
Specific function:
Not Available
Gene Name:
EHHADH
Uniprot ID:
Q08426
Molecular weight:
69153.26
General function:
Involved in 3-hydroxyisobutyrate dehydrogenase activity
Specific function:
Not Available
Gene Name:
HIBADH
Uniprot ID:
P31937
Molecular weight:
35328.515
Reactions
(S)-3-Hydroxyisobutyric acid + NAD → 2-Methyl-3-oxopropanoic acid + NADHdetails
General function:
Involved in transaminase activity
Specific function:
Can metabolize asymmetric dimethylarginine (ADMA) via transamination to alpha-keto-delta-(NN-dimethylguanidino) valeric acid (DMGV). ADMA is a potent inhibitor of nitric-oxide (NO) synthase, and this activity provides mechanism through which the kidney regulates blood pressure.
Gene Name:
AGXT2
Uniprot ID:
Q9BYV1
Molecular weight:
57155.905
Reactions
(R)-beta-Aminoisobutyric acid + Pyruvic acid → 2-Methyl-3-oxopropanoic acid + L-Alaninedetails