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Record Information
Version1.0
Creation Date2016-09-30 22:07:18 UTC
Update Date2020-05-11 22:52:21 UTC
MCDB ID BMDB0000008
Secondary Accession Numbers
  • BMDB00008
Metabolite Identification
Common Name2-Hydroxybutyric acid
Description2-Hydroxybutyric acid, also known as alpha-hydroxybutyrate or 2-hydroxybutanoate, 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. 2-Hydroxybutyric acid exists as a solid, very hydrophobic, practically insoluble (in water), and relatively neutral molecule. 2-Hydroxybutyric acid exists in all living species, ranging from bacteria to humans. 2-Hydroxybutyric acid is a potentially toxic compound.
Structure
Thumb
Synonyms
ValueSource
(S)-2-Hydroxybutanoic acidChEBI
2-HydroxybutyrateChEBI
2-Hydroxybutyric acidChEBI
L-2-Hydroxybutanoic acidChEBI
L-2-Hydroxybutyric acidChEBI
L-alpha-Hydroxybutanoic acidChEBI
L-alpha-Hydroxybutyric acidChEBI
(S)-2-HydroxybutanoateGenerator
L-2-HydroxybutanoateGenerator
L-2-HydroxybutyrateGenerator
L-a-HydroxybutanoateGenerator
L-a-Hydroxybutanoic acidGenerator
L-alpha-HydroxybutanoateGenerator
L-Α-hydroxybutanoateGenerator
L-Α-hydroxybutanoic acidGenerator
L-a-HydroxybutyrateGenerator
L-a-Hydroxybutyric acidGenerator
L-alpha-HydroxybutyrateGenerator
L-Α-hydroxybutyrateGenerator
L-Α-hydroxybutyric acidGenerator
(S)-2-HydroxybutyrateGenerator
2-HydroxybutanoateGenerator
(+)-2-Hydroxy-n-butyric acidHMDB
(+)-2-Hydroxybutanoic acidHMDB
(+)-2-Hydroxybutyric acidHMDB
(+)-alpha-Hydroxybutyric acidHMDB
(+)-α-Hydroxybutyric acidHMDB
(2S)-2-Hydroxybutanoic acidHMDB
(S)-(+)-2-Hydroxybutanoic acidHMDB
(S)-2-Hydroxybutyric acidHMDB
2-Hydroxybutanoic acidHMDB
alpha-Hydroxy-n-butyric acidHMDB
alpha-Hydroxybutanoic acidHMDB
alpha-Hydroxybutyric acidHMDB
α-Hydroxy-n-butyric acidHMDB
α-Hydroxybutanoic acidHMDB
α-Hydroxybutyric acidHMDB
Chemical FormulaC4H8O3
Average Molecular Weight104.105
Monoisotopic Molecular Weight104.047344118
IUPAC Name(2S)-2-hydroxybutanoic acid
Traditional Name(S)-2-hydroxybutyric acid
CAS Registry Number600-15-7
SMILES
CC[C@H](O)C(O)=O
InChI Identifier
InChI=1S/C4H8O3/c1-2-3(5)4(6)7/h3,5H,2H2,1H3,(H,6,7)/t3-/m0/s1
InChI KeyAFENDNXGAFYKQO-VKHMYHEASA-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
  • Fatty acid
  • Alpha-hydroxy acid
  • Secondary 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
Physical Properties
StateSolid
Experimental Properties
PropertyValueReference
Melting Point44.2 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
PropertyValueSource
logP-0.16ALOGPS
logP0.051ChemAxon
logS0.67ALOGPS
pKa (Strongest Acidic)3.99ChemAxon
pKa (Strongest Basic)-3.8ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area57.53 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity23.36 m³·mol⁻¹ChemAxon
Polarizability9.98 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectrum TypeDescriptionSplash KeyDeposition DateView
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-001j-0900000000-44dd1bf8072e5731bac42020-02-05View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (2 TMS)splash10-00e9-9700000000-93eba027d5343e3d6ce12020-02-05View Spectrum
GC-MSGC-MS Spectrum - GC-MS (2 TMS)splash10-001i-1910000000-3bc9898b26df33cad2442020-02-05View Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0a4i-9000000000-4d935da8e593ec61fd962020-02-05View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-001j-0900000000-44dd1bf8072e5731bac42020-02-05View Spectrum
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00e9-9700000000-93eba027d5343e3d6ce12020-02-05View Spectrum
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-001i-1910000000-3bc9898b26df33cad2442020-02-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_1) - 70eV, PositiveNot Available2021-11-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_2) - 70eV, PositiveNot Available2021-11-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_1) - 70eV, PositiveNot Available2021-11-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_1_2) - 70eV, PositiveNot Available2021-11-05View Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TBDMS_2_1) - 70eV, PositiveNot Available2021-11-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Negative (Annotated)splash10-0zfr-9600000000-f688c3e6fdeb5f0270c52020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Negative (Annotated)splash10-0a4j-9200000000-e3b371c29b9ebed3199b2020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Negative (Annotated)splash10-0zfs-9700000000-bccfada2c97e04d344172020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - EI-B (HITACHI RMU-7M) , Positivesplash10-0a4i-9000000000-4d935da8e593ec61fd962020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-IT , negativesplash10-0udi-2900000000-3c7915ea71886873f0242020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - , negativesplash10-0zfr-7900000000-d91c840306a06d4ea5132020-02-05View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 40V, Negativesplash10-0006-9000000000-94eb4d9d668d4d53231b2021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 10V, Negativesplash10-0pb9-9500000000-a90d8674aafbec41b8b22021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 20V, Negativesplash10-0a4i-9400000000-7b0a49d8800ded4cdff42021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-0zfr-7900000000-52227d0dd814179fde452021-09-20View Spectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Negativesplash10-0zmi-9600000000-8ea58ec01176ecce47352021-09-20View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0a4r-9400000000-7bdf5cb6c5aa8c1d607d2019-02-22View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4r-9100000000-bf04b472392c16bd165c2019-02-22View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-052f-9000000000-483980f183cd4095b2f32019-02-22View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-5900000000-9185cef9251e02ac688c2019-02-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0a4r-9200000000-ea836921fe44635e66c22019-02-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4l-9000000000-cf8130e8094c63aa0e252019-02-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-052o-9000000000-d175dd460cd717e713502021-09-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0a4l-9000000000-0244ee6a1375f83df3a22021-09-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0006-9000000000-a4c46731c8286baabca92021-09-23View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0udi-2900000000-d938708d3f7f8d7127102021-09-24View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0ap0-9100000000-a0763e4b908fc98b58532021-09-24View Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0a4i-9000000000-9077c11ebfee5a552d352021-09-24View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, H2O, experimental)Not Available2020-02-05View Spectrum
1D NMR13C NMR Spectrum (1D, 15.09 MHz, CDCl3, experimental)Not Available2020-02-05View Spectrum
1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)Not Available2021-09-14View Spectrum
2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)Not Available2020-02-05View Spectrum
Concentrations
StatusValueReferenceDetails
Detected but not QuantifiedNot Applicable details
Detected but not QuantifiedNot Applicable details
HMDB IDHMDB0000008
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FoodDB IDFDB021867
KNApSAcK IDNot Available
Chemspider ID389701
KEGG Compound IDC05984
BioCyc IDCPD-3564
BiGG IDNot Available
Wikipedia Link2-Hydroxybutyric_acid
METLIN IDNot Available
PubChem Compound440864
PDB IDNot Available
ChEBI ID50613
References
Synthesis ReferenceCarlier, J. P.; Henry, C.; Lorin, V.; Rouffignat, K. Conversion of DL-threonine, D-threonine and 2-oxobutyrate into propionate and 2-hydroxybutyrate by Fusobacterium species. Letters in Applied Microbiology (1997), 25(5), 371-374.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Melzer N, Wittenburg D, Hartwig S, Jakubowski S, Kesting U, Willmitzer L, Lisec J, Reinsch N, Repsilber D: Investigating associations between milk metabolite profiles and milk traits of Holstein cows. J Dairy Sci. 2013 Mar;96(3):1521-34. doi: 10.3168/jds.2012-5743. [PubMed:23438684 ]
  2. Sun HZ, Shi K, Wu XH, Xue MY, Wei ZH, Liu JX, Liu HY: Lactation-related metabolic mechanism investigated based on mammary gland metabolomics and 4 biofluids' metabolomics relationships in dairy cows. BMC Genomics. 2017 Dec 2;18(1):936. doi: 10.1186/s12864-017-4314-1. [PubMed:29197344 ]