Hmdb loader
Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2023-05-30 20:55:52 UTC
HMDB IDHMDB0000729
Secondary Accession Numbers
  • HMDB00729
Metabolite Identification
Common Namealpha-Hydroxyisobutyric acid
Descriptionalpha-Hydroxyisobutyric acid is a metabolite of methyl tert-butyl ether (MTBE). MTBE may be obtained through environmental exposure. MTBE is rapidly eliminated from the body, mainly through expired air as the unchanged compound. MTBE is to some extent metabolized to t-butyl alcohol (TBA) and formaldehyde and oxidized to 2-methyl-1,2-propanediol and alpha-hydroxyisobutyric acid. alpha-Hydroxyisobutyric acid has been used as an aerial bactericide.
Structure
Data?1676999706
Synonyms
ValueSource
2-Hydroxy-2-methylpropionic acidChEBI
2-Hydroxy-2-methylpropionsaeureChEBI
2-Methyl-2-hydroxypropanoic acidChEBI
2-Methyl-2-hydroxypropionsaeureChEBI
2-Methyllactic acidChEBI
Acetonic acidChEBI
Acide 2-hydroxy-2-methylpropanoiqueChEBI
Acido 2-hidroxi-2-metilpropionicoChEBI
alpha-Hydroxy-alpha-methylpropanoic acidChEBI
alpha-Hydroxy-alpha-methylpropionic acidChEBI
alpha-Hydroxyisobutanoic acidChEBI
HIBAChEBI
Hydroxydimethylacetic acidChEBI
2-Hydroxy-2-methylpropionateGenerator
2-Methyl-2-hydroxypropanoateGenerator
2-MethyllactateGenerator
AcetonateGenerator
a-Hydroxy-a-methylpropanoateGenerator
a-Hydroxy-a-methylpropanoic acidGenerator
alpha-Hydroxy-alpha-methylpropanoateGenerator
Α-hydroxy-α-methylpropanoateGenerator
Α-hydroxy-α-methylpropanoic acidGenerator
a-Hydroxy-a-methylpropionateGenerator
a-Hydroxy-a-methylpropionic acidGenerator
alpha-Hydroxy-alpha-methylpropionateGenerator
Α-hydroxy-α-methylpropionateGenerator
Α-hydroxy-α-methylpropionic acidGenerator
a-HydroxyisobutanoateGenerator
a-Hydroxyisobutanoic acidGenerator
alpha-HydroxyisobutanoateGenerator
Α-hydroxyisobutanoateGenerator
Α-hydroxyisobutanoic acidGenerator
HydroxydimethylacetateGenerator
a-HydroxyisobutyrateGenerator
a-Hydroxyisobutyric acidGenerator
alpha-HydroxyisobutyrateGenerator
Α-hydroxyisobutyrateGenerator
Α-hydroxyisobutyric acidGenerator
a-Hydroxy-isobutyrateHMDB
a-Hydroxy-isobutyric acidHMDB
alpha-Hydroxy-isobutyrateHMDB
Α-hydroxy-isobutyrateHMDB
Α-hydroxy-isobutyric acidHMDB
(CH3)2cohcoohHMDB
2-Hydroxy-2-methylpropanoateHMDB
2-Hydroxy-2-methylpropanoic acidHMDB
2-HydroxyisobutyrateHMDB
2-Hydroxyisobutyric acidHMDB
a-HIBHMDB
alpha-HIBHMDB
HydroxyisobutyrateHMDB
L-2-MethyllactateHMDB
L-2-Methyllactic acidHMDB
2-Hydroxyisobutyric acid, lead saltHMDB
Lead 2-hydroxyisobutyric acidHMDB
alpha-Hydroxyisobutyric acidChEBI
Chemical FormulaC4H8O3
Average Molecular Weight104.1045
Monoisotopic Molecular Weight104.047344122
IUPAC Name2-hydroxy-2-methylpropanoic acid
Traditional Nameacetonate
CAS Registry Number594-61-6
SMILES
CC(C)(O)C(O)=O
InChI Identifier
InChI=1S/C4H8O3/c1-4(2,7)3(5)6/h7H,1-2H3,(H,5,6)
InChI KeyBWLBGMIXKSTLSX-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as alpha hydroxy acids and derivatives. These are organic compounds containing a carboxylic acid substituted with a hydroxyl group on the adjacent carbon.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassHydroxy acids and derivatives
Sub ClassAlpha hydroxy acids and derivatives
Direct ParentAlpha hydroxy acids and derivatives
Alternative Parents
Substituents
  • Alpha-hydroxy acid
  • Tertiary alcohol
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Alcohol
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Ontology
Physiological effect
Disposition
ProcessNot Available
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point82.5 °CNot Available
Boiling Point212.00 °C. @ 760.00 mm HgThe Good Scents Company Information System
Water Solubility1000000 mg/L @ 25 °C (est)The Good Scents Company Information System
LogP-0.36HANSCH,C ET AL. (1995)
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility378 g/LALOGPS
logP-0.37ALOGPS
logP-0.039ChemAxon
logS0.56ALOGPS
pKa (Strongest Acidic)3.95ChemAxon
pKa (Strongest Basic)-3.7ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count1ChemAxon
Refractivity23.55 m³·mol⁻¹ChemAxon
Polarizability9.87 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]+120.64931661259
DarkChem[M-H]-113.98931661259
AllCCS[M+H]+126.51332859911
AllCCS[M-H]-123.51632859911
DeepCCS[M+H]+123.30130932474
DeepCCS[M-H]-120.50130932474
DeepCCS[M-2H]-156.88730932474
DeepCCS[M+Na]+131.49830932474
AllCCS[M+H]+126.532859911
AllCCS[M+H-H2O]+122.332859911
AllCCS[M+NH4]+130.532859911
AllCCS[M+Na]+131.632859911
AllCCS[M-H]-123.532859911
AllCCS[M+Na-2H]-127.532859911
AllCCS[M+HCOO]-131.932859911

Predicted Retention Times

Underivatized

Chromatographic MethodRetention TimeReference
Measured using a Waters Acquity ultraperformance liquid chromatography (UPLC) ethylene-bridged hybrid (BEH) C18 column (100 mm × 2.1 mm; 1.7 μmparticle diameter). Predicted by Afia on May 17, 2022. Predicted by Afia on May 17, 2022.1.21 minutes32390414
Predicted by Siyang on May 30, 20229.2642 minutes33406817
Predicted by Siyang using ReTip algorithm on June 8, 20224.12 minutes32390414
AjsUoB = Accucore 150 Amide HILIC with 10mM Ammonium Formate, 0.1% Formic Acid194.2 seconds40023050
Fem_Long = Waters ACQUITY UPLC HSS T3 C18 with Water:MeOH and 0.1% Formic Acid881.2 seconds40023050
Fem_Lipids = Ascentis Express C18 with (60:40 water:ACN):(90:10 IPA:ACN) and 10mM NH4COOH + 0.1% Formic Acid350.5 seconds40023050
Life_Old = Waters ACQUITY UPLC BEH C18 with Water:(20:80 acetone:ACN) and 0.1% Formic Acid74.0 seconds40023050
Life_New = RP Waters ACQUITY UPLC HSS T3 C18 with Water:(30:70 MeOH:ACN) and 0.1% Formic Acid219.0 seconds40023050
RIKEN = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid47.6 seconds40023050
Eawag_XBridgeC18 = XBridge C18 3.5u 2.1x50 mm with Water:MeOH and 0.1% Formic Acid287.5 seconds40023050
BfG_NTS_RP1 =Agilent Zorbax Eclipse Plus C18 (2.1 mm x 150 mm, 3.5 um) with Water:ACN and 0.1% Formic Acid339.7 seconds40023050
HILIC_BDD_2 = Merck SeQuant ZIC-HILIC with ACN(0.1% formic acid):water(16 mM ammonium formate)133.1 seconds40023050
UniToyama_Atlantis = RP Waters Atlantis T3 (2.1 x 150 mm, 5 um) with ACN:Water and 0.1% Formic Acid607.2 seconds40023050
BDD_C18 = Hypersil Gold 1.9µm C18 with Water:ACN and 0.1% Formic Acid92.4 seconds40023050
UFZ_Phenomenex = Kinetex Core-Shell C18 2.6 um, 3.0 x 100 mm, Phenomenex with Water:MeOH and 0.1% Formic Acid685.9 seconds40023050
SNU_RIKEN_POS = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid213.4 seconds40023050
RPMMFDA = Waters ACQUITY UPLC BEH C18 with Water:ACN and 0.1% Formic Acid260.2 seconds40023050
MTBLS87 = Merck SeQuant ZIC-pHILIC column with ACN:Water and :ammonium carbonate537.9 seconds40023050
KI_GIAR_zic_HILIC_pH2_7 = Merck SeQuant ZIC-HILIC with ACN:Water and 0.1% FA287.0 seconds40023050
Meister zic-pHILIC pH9.3 = Merck SeQuant ZIC-pHILIC column with ACN:Water 5mM NH4Ac pH9.3 and 5mM ammonium acetate in water228.5 seconds40023050

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
alpha-Hydroxyisobutyric acidCC(C)(O)C(O)=O1803.8Standard polar33892256
alpha-Hydroxyisobutyric acidCC(C)(O)C(O)=O852.7Standard non polar33892256
alpha-Hydroxyisobutyric acidCC(C)(O)C(O)=O871.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
alpha-Hydroxyisobutyric acid,1TMS,isomer #1CC(C)(O[Si](C)(C)C)C(=O)O1025.3Semi standard non polar33892256
alpha-Hydroxyisobutyric acid,1TMS,isomer #2CC(C)(O)C(=O)O[Si](C)(C)C898.3Semi standard non polar33892256
alpha-Hydroxyisobutyric acid,2TMS,isomer #1CC(C)(O[Si](C)(C)C)C(=O)O[Si](C)(C)C1069.3Semi standard non polar33892256
alpha-Hydroxyisobutyric acid,1TBDMS,isomer #1CC(C)(O[Si](C)(C)C(C)(C)C)C(=O)O1260.4Semi standard non polar33892256
alpha-Hydroxyisobutyric acid,1TBDMS,isomer #2CC(C)(O)C(=O)O[Si](C)(C)C(C)(C)C1145.6Semi standard non polar33892256
alpha-Hydroxyisobutyric acid,2TBDMS,isomer #1CC(C)(O[Si](C)(C)C(C)(C)C)C(=O)O[Si](C)(C)C(C)(C)C1522.6Semi standard non polar33892256
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Blood
  • Feces
  • Saliva
  • Urine
Tissue Locations
  • Placenta
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified7.0 (0.0-9.0) uMAdult (>18 years old)BothNormal details
BloodDetected and Quantified8.2 uMAdult (>18 years old)BothNormal details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
SalivaDetected and Quantified9.00 +/- 2.95 uMAdult (>18 years old)BothNormal
    • Zerihun T. Dame, ...
details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified0.60 (0.35-0.97) umol/mmol creatinineNewborn (0-30 days old)Both
Normal
    • Analysis of 40 NI...
details
UrineDetected and Quantified4.4-7.6 umol/mmol creatinineAdult (>18 years old)MaleNormal details
UrineDetected and Quantified4.4-7.4 umol/mmol creatinineAdult (>18 years old)FemaleNormal details
UrineDetected and Quantified<50 umol/mmol creatinineChildren (1 - 18 years old)Both
Normal
    • BC Children's Hos...
details
UrineDetected and Quantified13.322 +/- 5.638 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Normal
    • Analysis of 30 no...
details
UrineDetected and Quantified7.821 +/- 3.811 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Normal
    • Analysis of 30 no...
details
UrineDetected and Quantified7.9 (3.7-19.5) umol/mmol creatinineChildren (1-13 years old)Both
Normal
details
UrineDetected and Quantified3.8 (1.7-5.9) umol/mmol creatinineAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified2.9 (1.3-4.6) umol/mmol creatinineAdult (>18 years old)Both
Normal
details
UrineDetected and Quantified3.80 umol/mmol creatinineAdult (>18 years old)MaleNormal
    • Shaykhutdinov RA,...
details
UrineDetected and Quantified5.5 (2.9-10.3) umol/mmol creatinineAdolescent (13-18 years old)Both
Normal
details
UrineDetected and Quantified6.2 (3.8-14.1) umol/mmol creatinineChildren (1-13 years old)Both
Normal
details
UrineDetected and Quantified0.1 (0.1-3.8) umol/mmol creatinineNewborn (0-30 days old)BothNormal details
UrineDetected and Quantified0.1 (0.1-8.2) umol/mmol creatinineInfant (0-1 year old)BothNormal details
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Lung cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothColorectal Cancer details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Colorectal cancer
details
UrineDetected and Quantified5.0 (0.0-8.0) umol/mmol creatinineNot SpecifiedBothLung cancer details
UrineDetected and Quantified9.37 +/- 5.223 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Eosinophilic esophagitis
    • Analysis of 30 no...
details
UrineDetected and Quantified11.83 +/- 4.351 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Eosinophilic esophagitis
    • Analysis of 30 no...
details
UrineDetected and Quantified12.057 +/- 6.013 umol/mmol creatinineChildren (1 - 13 years old)Not Specified
Gastroesophageal reflux disease
    • Analysis of 30 no...
details
UrineDetected but not QuantifiedNot QuantifiedAdult (>18 years old)BothBladder cancer details
Associated Disorders and Diseases
Disease References
Colorectal cancer
  1. Brown DG, Rao S, Weir TL, O'Malia J, Bazan M, Brown RJ, Ryan EP: Metabolomics and metabolic pathway networks from human colorectal cancers, adjacent mucosa, and stool. Cancer Metab. 2016 Jun 6;4:11. doi: 10.1186/s40170-016-0151-y. eCollection 2016. [PubMed:27275383 ]
  2. Sinha R, Ahn J, Sampson JN, Shi J, Yu G, Xiong X, Hayes RB, Goedert JJ: Fecal Microbiota, Fecal Metabolome, and Colorectal Cancer Interrelations. PLoS One. 2016 Mar 25;11(3):e0152126. doi: 10.1371/journal.pone.0152126. eCollection 2016. [PubMed:27015276 ]
  3. Goedert JJ, Sampson JN, Moore SC, Xiao Q, Xiong X, Hayes RB, Ahn J, Shi J, Sinha R: Fecal metabolomics: assay performance and association with colorectal cancer. Carcinogenesis. 2014 Sep;35(9):2089-96. doi: 10.1093/carcin/bgu131. Epub 2014 Jul 18. [PubMed:25037050 ]
Lung Cancer
  1. Wishart DS, Knox C, Guo AC, Eisner R, Young N, Gautam B, Hau DD, Psychogios N, Dong E, Bouatra S, Mandal R, Sinelnikov I, Xia J, Jia L, Cruz JA, Lim E, Sobsey CA, Shrivastava S, Huang P, Liu P, Fang L, Peng J, Fradette R, Cheng D, Tzur D, Clements M, Lewis A, De Souza A, Zuniga A, Dawe M, Xiong Y, Clive D, Greiner R, Nazyrova A, Shaykhutdinov R, Li L, Vogel HJ, Forsythe I: HMDB: a knowledgebase for the human metabolome. Nucleic Acids Res. 2009 Jan;37(Database issue):D603-10. doi: 10.1093/nar/gkn810. Epub 2008 Oct 25. [PubMed:18953024 ]
  2. Chen Y, Ma Z, Min L, Li H, Wang B, Zhong J, Dai L: Biomarker identification and pathway analysis by serum metabolomics of lung cancer. Biomed Res Int. 2015;2015:183624. doi: 10.1155/2015/183624. Epub 2015 Apr 16. [PubMed:25961003 ]
Eosinophilic esophagitis
  1. Slae, M., Huynh, H., Wishart, D.S. (2014). Analysis of 30 normal pediatric urine samples via NMR spectroscopy (unpublished work). NA.
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022207
KNApSAcK IDNot Available
Chemspider ID11181
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkNot Available
METLIN ID3750
PubChem Compound11671
PDB IDNot Available
ChEBI ID50129
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDMDB00000238
Good Scents IDrw1176881
References
Synthesis ReferenceVogl, O. Synthesis of a-hydroxyisobutyric acid from isobutylene. Journal of Organic Chemistry (1958), 23 1488-9.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Guneral F, Bachmann C: Age-related reference values for urinary organic acids in a healthy Turkish pediatric population. Clin Chem. 1994 Jun;40(6):862-6. [PubMed:8087979 ]
  2. Benson JM, Barr EB, Krone JR: MTBE inhaled alone and in combination with gasoline vapor: uptake, distribution, metabolism, and excretion in rats. Res Rep Health Eff Inst. 2001 May;(102):73-94; discussion 95-109. [PubMed:11504149 ]
  3. Authors unspecified: NTP Toxicology and Carcinogenesis Studies of Isobutene (CAS No. 115-11-7) in F344/N Rats and B6C3F1 Mice (Inhalation Studies). Natl Toxicol Program Tech Rep Ser. 1998 Dec;487:1-230. [PubMed:12563344 ]
  4. Shigematsu Y, Sudo M, Momoi T, Inoue Y, Suzuki Y, Kameyama J: Changing plasma and urinary organic acid levels in a patient with isovaleric acidemia during an attack. Pediatr Res. 1982 Sep;16(9):771-5. [PubMed:7133811 ]
  5. Elshenawy S, Pinney SE, Stuart T, Doulias PT, Zura G, Parry S, Elovitz MA, Bennett MJ, Bansal A, Strauss JF 3rd, Ischiropoulos H, Simmons RA: The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth. Int J Mol Sci. 2020 Feb 4;21(3). pii: ijms21031043. doi: 10.3390/ijms21031043. [PubMed:32033212 ]

Enzymes

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
alpha-Hydroxyisobutyric acid → 6-(1-carboxy-1-methylethoxy)-3,4,5-trihydroxyoxane-2-carboxylic aciddetails
alpha-Hydroxyisobutyric acid → 3,4,5-trihydroxy-6-[(2-hydroxy-2-methylpropanoyl)oxy]oxane-2-carboxylic aciddetails