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Record Information
Version5.0
StatusExpected but not Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2023-02-21 17:14:43 UTC
HMDB IDHMDB0000329
Secondary Accession Numbers
  • HMDB00329
Metabolite Identification
Common Name2-Phenylbutyric acid
Description2-Phenylbutyric acid, also known as a-phenylbutyrate or a-ethyl-a-toluate, belongs to the class of organic compounds known as phenylpropanes. These are organic compounds containing a phenylpropane moiety. 2-Phenylbutyric acid exists in all living organisms, ranging from bacteria to humans. 2-Phenylbutyric acid has been detected, but not quantified in, a few different foods, such as anatidaes (Anatidae), chickens (Gallus gallus), and domestic pigs (Sus scrofa domestica). This could make 2-phenylbutyric acid a potential biomarker for the consumption of these foods. 2-Phenylbutyric acid is a secondary metabolite. Secondary metabolites are metabolically or physiologically non-essential metabolites that may serve a role as defense or signalling molecules. In some cases they are simply molecules that arise from the incomplete metabolism of other secondary metabolites. Based on a literature review a small amount of articles have been published on 2-Phenylbutyric acid.
Structure
Data?1676999683
Synonyms
ValueSource
alpha-Ethyl-alpha-toluic acidChEBI
alpha-Phenylbutyric acidChEBI
a-Ethyl-a-toluateGenerator
a-Ethyl-a-toluic acidGenerator
alpha-Ethyl-alpha-toluateGenerator
Α-ethyl-α-toluateGenerator
Α-ethyl-α-toluic acidGenerator
a-PhenylbutyrateGenerator
a-Phenylbutyric acidGenerator
alpha-PhenylbutyrateGenerator
Α-phenylbutyrateGenerator
Α-phenylbutyric acidGenerator
2-PhenylbutyrateGenerator
(RS)-2-PhenylbutanoateHMDB
(RS)-2-Phenylbutanoic acidHMDB
2-PhenylbutanoateHMDB
2-Phenylbutanoic acidHMDB
a-EthylbenzeneacetateHMDB
a-Ethylbenzeneacetic acidHMDB
a-EthylphenylacetateHMDB
a-Ethylphenylacetic acidHMDB
alpha-EthylbenzeneacetateHMDB
alpha-Ethylbenzeneacetic acidHMDB
alpha-EthylphenylacetateHMDB
alpha-Ethylphenylacetic acidHMDB
Chemical FormulaC10H12O2
Average Molecular Weight164.2011
Monoisotopic Molecular Weight164.083729628
IUPAC Name2-phenylbutanoic acid
Traditional Nameα-phenylbutyric acid
CAS Registry Number90-27-7
SMILES
CCC(C(O)=O)C1=CC=CC=C1
InChI Identifier
InChI=1S/C10H12O2/c1-2-9(10(11)12)8-6-4-3-5-7-8/h3-7,9H,2H2,1H3,(H,11,12)
InChI KeyOFJWFSNDPCAWDK-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phenylpropanes. These are organic compounds containing a phenylpropane moiety.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassPhenylpropanes
Direct ParentPhenylpropanes
Alternative Parents
Substituents
  • Phenylpropane
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point47.5 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility417 mg/mLNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
Water Solubility1.39 g/LALOGPS
logP2.53ALOGPS
logP2.6ChemAxon
logS-2.1ALOGPS
pKa (Strongest Acidic)4.66ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area37.3 ŲChemAxon
Rotatable Bond Count3ChemAxon
Refractivity46.54 m³·mol⁻¹ChemAxon
Polarizability17.47 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+136.58331661259
DarkChem[M-H]-134.46931661259
AllCCS[M+H]+135.25332859911
AllCCS[M-H]-135.92632859911
DeepCCS[M+H]+135.50130932474
DeepCCS[M-H]-132.3430932474
DeepCCS[M-2H]-169.21130932474
DeepCCS[M+Na]+144.7530932474
AllCCS[M+H]+135.332859911
AllCCS[M+H-H2O]+130.832859911
AllCCS[M+NH4]+139.432859911
AllCCS[M+Na]+140.632859911
AllCCS[M-H]-135.932859911
AllCCS[M+Na-2H]-137.032859911
AllCCS[M+HCOO]-138.332859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
2-Phenylbutyric acidCCC(C(O)=O)C1=CC=CC=C12464.3Standard polar33892256
2-Phenylbutyric acidCCC(C(O)=O)C1=CC=CC=C11374.0Standard non polar33892256
2-Phenylbutyric acidCCC(C(O)=O)C1=CC=CC=C11410.5Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
2-Phenylbutyric acid,1TMS,isomer #1CCC(C(=O)O[Si](C)(C)C)C1=CC=CC=C11375.3Semi standard non polar33892256
2-Phenylbutyric acid,1TBDMS,isomer #1CCC(C(=O)O[Si](C)(C)C(C)(C)C)C1=CC=CC=C11606.9Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid EI-B (Non-derivatized)splash10-0006-9400000000-988e77503c377b5a2e3e2017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid CI-B (Non-derivatized)splash10-00kf-7900000000-ef760cb9988d25d699322017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid EI-B (Non-derivatized)splash10-0006-9400000000-ebc9d9ef51b27c588c9f2017-09-12HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid EI-B (Non-derivatized)splash10-0006-9400000000-988e77503c377b5a2e3e2018-05-18HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid CI-B (Non-derivatized)splash10-00kf-7900000000-ef760cb9988d25d699322018-05-18HMDB team, MONA, MassBankView Spectrum
Experimental GC-MSGC-MS Spectrum - 2-Phenylbutyric acid EI-B (Non-derivatized)splash10-0006-9400000000-ebc9d9ef51b27c588c9f2018-05-18HMDB team, MONA, MassBankView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Phenylbutyric acid GC-MS (Non-derivatized) - 70eV, Positivesplash10-014l-7900000000-764acc91cfffcc8f77a62017-09-01Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Phenylbutyric acid GC-MS (1 TMS) - 70eV, Positivesplash10-01bc-9510000000-203cf2599cdcbac7ad7f2017-10-06Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Phenylbutyric acid GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - 2-Phenylbutyric acid GC-MS (TBDMS_1_1) - 70eV, PositiveNot Available2021-11-05Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid Quattro_QQQ 10V, Negative-QTOF (Annotated)splash10-014i-0900000000-8fcea6a7ce9b93f06d502012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid Quattro_QQQ 25V, Negative-QTOF (Annotated)splash10-014i-2900000000-de704012e4e74de53e962012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid Quattro_QQQ 40V, Negative-QTOF (Annotated)splash10-014i-3900000000-0631644a350ecd57d7802012-07-24HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid EI-B (HITACHI RMU-6M) , Positive-QTOFsplash10-0006-9400000000-917ec34dee3aec9dade72012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid CI-B (HITACHI M-80) , Positive-QTOFsplash10-00kf-7900000000-a3de2611b1cb515992d82012-08-31HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Positive-QTOFsplash10-00kf-9500000000-606d4701f1a49ff396962021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid 40V, Positive-QTOFsplash10-0006-9000000000-c3fe0b74ad837e4519972021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Negative-QTOFsplash10-014i-0900000000-d3ec3ed37966c46b999d2021-09-20HMDB team, MONAView Spectrum
Experimental LC-MS/MSLC-MS/MS Spectrum - 2-Phenylbutyric acid 20V, Positive-QTOFsplash10-0006-9000000000-aadc5424caa876ac879b2021-09-20HMDB team, MONAView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Positive-QTOFsplash10-014j-0900000000-ceeaafb73b11f48c23b42017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 20V, Positive-QTOFsplash10-014j-1900000000-b10d05a43188ee02ed4e2017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 40V, Positive-QTOFsplash10-00ou-9600000000-51aaab679b332e7c6ad22017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Negative-QTOFsplash10-03di-0900000000-cfec5c0b8da0b417e2a52017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 20V, Negative-QTOFsplash10-02t9-0900000000-82075082e32cd4fb77b82017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 40V, Negative-QTOFsplash10-00or-9500000000-fea55a74b860dc681ca92017-09-01Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Positive-QTOFsplash10-014l-4900000000-9d906c6fb14a8c78448e2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 20V, Positive-QTOFsplash10-0006-9200000000-6979466b264ad0e308b02021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 40V, Positive-QTOFsplash10-0006-9000000000-323e0a1122d87faf932f2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 10V, Negative-QTOFsplash10-03di-0900000000-7aa4213fc1906060cf002021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 20V, Negative-QTOFsplash10-0006-9500000000-392941613cc50eb91d8f2021-09-22Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 2-Phenylbutyric acid 40V, Negative-QTOFsplash10-004i-9200000000-d37b3d0477818231781b2021-09-22Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Experimental 1D NMR1H NMR Spectrum (1D, 500 MHz, H2O, experimental)2012-12-04Wishart LabView Spectrum
Experimental 2D NMR[1H, 13C]-HSQC NMR Spectrum (2D, 600 MHz, H2O, experimental)2012-12-05Wishart 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
  • Membrane (predicted from logP)
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 IDFDB021954
KNApSAcK IDNot Available
Chemspider ID6745
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkSodium phenylbutyrate
METLIN ID5318
PubChem Compound7012
PDB IDNot Available
ChEBI ID86545
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceAratake, Yuichiro; Hazama, Motoo. Preparation of 2-phenylbutyric acids. Jpn. Kokai Tokkyo Koho (1998), 4 pp.
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Bohner H, Janiak PS, Nitsche V, Eichinger A, Schutz H: Relative bioavailability of different butamirate citrate preparations after single dose oral administration to 18 healthy volunteers. Int J Clin Pharmacol Ther. 1997 Mar;35(3):117-22. [PubMed:9089001 ]