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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2006-05-22 14:17:31 UTC
Update Date2023-02-21 17:16:02 UTC
HMDB IDHMDB0002011
Secondary Accession Numbers
  • HMDB02011
Metabolite Identification
Common Name4-Hydroxyisovaleric acid
Description4-Hydroxyisovaleric acid, also known as 4-hydroxyisopentanoate, belongs to the class of organic compounds known as hydroxy fatty acids. These are fatty acids in which the chain bears a hydroxyl group. 4-Hydroxyisovaleric acid is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral.
Structure
Data?1676999762
Synonyms
ValueSource
4-HydroxyisovalerateGenerator
4-HydroxyisopentanoateHMDB
4-Hydroxyisopentanoic acidHMDB
4-Hydroxy-isovalerateHMDB
4-Hydroxyisovaleric acidMeSH
Chemical FormulaC5H10O3
Average Molecular Weight118.1311
Monoisotopic Molecular Weight118.062994186
IUPAC Name4-hydroxy-3-methylbutanoic acid
Traditional Name4-hydroxyisopentanoate
CAS Registry Number77220-86-1
SMILES
CC(CO)CC(O)=O
InChI Identifier
InChI=1S/C5H10O3/c1-4(3-6)2-5(7)8/h4,6H,2-3H2,1H3,(H,7,8)
InChI KeyZGYGEPZZMAXSKH-UHFFFAOYSA-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
  • Methyl-branched fatty acid
  • Short-chain hydroxy acid
  • Hydroxy fatty acid
  • Branched fatty acid
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Primary alcohol
  • Organooxygen compound
  • Carbonyl group
  • Alcohol
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Process
Role
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 Solubility276 g/LALOGPS
logP-0.09ALOGPS
logP-0.15ChemAxon
logS0.37ALOGPS
pKa (Strongest Acidic)4.59ChemAxon
pKa (Strongest Basic)-2.6ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity28.27 m³·mol⁻¹ChemAxon
Polarizability11.91 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]+126.44931661259
DarkChem[M-H]-119.56631661259
DeepCCS[M+H]+137.20530932474
DeepCCS[M-H]-134.44330932474
DeepCCS[M-2H]-170.89330932474
DeepCCS[M+Na]+145.77630932474
AllCCS[M+H]+128.432859911
AllCCS[M+H-H2O]+124.232859911
AllCCS[M+NH4]+132.332859911
AllCCS[M+Na]+133.432859911
AllCCS[M-H]-126.732859911
AllCCS[M+Na-2H]-130.032859911
AllCCS[M+HCOO]-133.632859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
4-Hydroxyisovaleric acidCC(CO)CC(O)=O2338.7Standard polar33892256
4-Hydroxyisovaleric acidCC(CO)CC(O)=O1035.9Standard non polar33892256
4-Hydroxyisovaleric acidCC(CO)CC(O)=O1112.2Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
4-Hydroxyisovaleric acid,1TMS,isomer #1CC(CO[Si](C)(C)C)CC(=O)O1222.3Semi standard non polar33892256
4-Hydroxyisovaleric acid,1TMS,isomer #2CC(CO)CC(=O)O[Si](C)(C)C1159.5Semi standard non polar33892256
4-Hydroxyisovaleric acid,2TMS,isomer #1CC(CO[Si](C)(C)C)CC(=O)O[Si](C)(C)C1272.0Semi standard non polar33892256
4-Hydroxyisovaleric acid,1TBDMS,isomer #1CC(CO[Si](C)(C)C(C)(C)C)CC(=O)O1453.0Semi standard non polar33892256
4-Hydroxyisovaleric acid,1TBDMS,isomer #2CC(CO)CC(=O)O[Si](C)(C)C(C)(C)C1388.2Semi standard non polar33892256
4-Hydroxyisovaleric acid,2TBDMS,isomer #1CC(CO[Si](C)(C)C(C)(C)C)CC(=O)O[Si](C)(C)C(C)(C)C1691.6Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - 4-Hydroxyisovaleric acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-0536-9100000000-3fc712efcbb9fc4f30642017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 4-Hydroxyisovaleric acid GC-MS (2 TMS) - 70eV, Positivesplash10-00di-9710000000-7889823db89ae94de7b42017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 4-Hydroxyisovaleric 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 - 4-Hydroxyisovaleric acid 10V, Positive-QTOFsplash10-0uxr-5900000000-44f5a19c4f52d431d4e02016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 20V, Positive-QTOFsplash10-0a4l-9100000000-6535308e2dd234ab5aeb2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 40V, Positive-QTOFsplash10-0006-9000000000-dde3270c1cbccc8b30132016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 10V, Negative-QTOFsplash10-014i-9800000000-d1842134a343234223a82016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 20V, Negative-QTOFsplash10-06dj-9300000000-3e6079f4c1d5f243bf2e2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 40V, Negative-QTOFsplash10-0a4l-9000000000-123016e0357d669baece2016-08-03Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 10V, Negative-QTOFsplash10-000t-9100000000-d3579e59fa662e6106f02021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 20V, Negative-QTOFsplash10-00r2-9000000000-e002e53abd30ff5cf6332021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 40V, Negative-QTOFsplash10-014l-9000000000-ae9180e212f0ab050d7c2021-09-21Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 10V, Positive-QTOFsplash10-0udi-7900000000-257554ef10cca5f6bacd2021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 20V, Positive-QTOFsplash10-0a5c-9000000000-18339fa3b7cdee3b15142021-09-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 4-Hydroxyisovaleric acid 40V, Positive-QTOFsplash10-0006-9000000000-cfbc37820035236f6cf32021-09-25Wishart 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
  • Extracellular
  • Membrane
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot Available
Normal
      Not Available
details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
UrineDetected but not QuantifiedNot QuantifiedNot AvailableNot AvailableIsovaleric acidemia details
Associated Disorders and Diseases
Disease References
Isovaleric acidemia
  1. Kumps A, Duez P, Mardens Y: Metabolic, nutritional, iatrogenic, and artifactual sources of urinary organic acids: a comprehensive table. Clin Chem. 2002 May;48(5):708-17. [PubMed:11978597 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022793
KNApSAcK IDNot Available
Chemspider ID116413
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkBeta-Hydroxy beta-methylbutyric acid
METLIN ID6434
PubChem Compound131760
PDB IDNot Available
ChEBI ID384411
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Truscott RJ, Malegan D, McCairns E, Burke D, Hick L, Sims P, Halpern B, Tanaka K, Sweetman L, Nyhan WL, Hammond J, Bumack C, Haan EA, Danks DM: New metabolites in isovaleric acidemia. Clin Chim Acta. 1981 Mar 5;110(2-3):187-203. [PubMed:6452974 ]

Enzymes

General function:
Involved in sulfotransferase activity
Specific function:
Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the sulfate conjugation of many hormones, neurotransmitters, drugs and xenobiotic compounds. Sulfonation increases the water solubility of most compounds, and therefore their renal excretion, but it can also result in bioactivation to form active metabolites. Sulfates hydroxysteroids like DHEA. Isoform 1 preferentially sulfonates cholesterol, and isoform 2 avidly sulfonates pregnenolone but not cholesterol.
Gene Name:
SULT2B1
Uniprot ID:
O00204
Molecular weight:
39598.595
Reactions
4-Hydroxyisovaleric acid → 3-methyl-4-(sulfooxy)butanoic aciddetails
General function:
Involved in transferase activity, transferring hexosyl groups
Specific function:
UDPGT is of major importance in the conjugation and subsequent elimination of potentially toxic xenobiotics and endogenous compounds. This isoform glucuronidates bilirubin IX-alpha to form both the IX-alpha-C8 and IX-alpha-C12 monoconjugates and diconjugate. Is also able to catalyze the glucuronidation of 17beta-estradiol, 17alpha-ethinylestradiol, 1-hydroxypyrene, 4-methylumbelliferone, 1-naphthol, paranitrophenol, scopoletin, and umbelliferone.
Gene Name:
UGT1A1
Uniprot ID:
P22309
Molecular weight:
59590.91
Reactions
4-Hydroxyisovaleric acid → 6-(3-carboxy-2-methylpropoxy)-3,4,5-trihydroxyoxane-2-carboxylic aciddetails
4-Hydroxyisovaleric acid → 3,4,5-trihydroxy-6-[(4-hydroxy-3-methylbutanoyl)oxy]oxane-2-carboxylic aciddetails