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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2014-10-08 15:57:16 UTC
Update Date2023-02-21 17:30:34 UTC
HMDB IDHMDB0061916
Secondary Accession Numbers
  • HMDB61916
Metabolite Identification
Common NamePhenylglyoxal
DescriptionPhenylglyoxal belongs to the class of organic compounds known as phenylacetaldehydes. Phenylacetaldehydes are compounds containing a phenylacetaldehyde moiety, which consists of a phenyl group substituted at the second position by an acetalydehyde. Phenylglyoxal was first prepared by thermal decomposition of the sulfite derivative of the oxime:C6H5C(O)CH(NOSO2H) + 2 H2O → C6H5C(O)CHO + NH4HSO4More conveniently, it can be prepared from methyl benzoate by reaction with KCH2S(O)CH3 to give PhC(O)CH(SCH3)(OH), which is oxidized with copper(II) acetate. It has been used as a reagent to modify the amino acid, arginine. Phenylglyoxal is an extremely weak basic (essentially neutral) compound (based on its pKa). Phenylglyoxal is the organic compound with the formula C6H5C(O)C(O)H. Phenylglyoxal exists in all living organisms, ranging from bacteria to humans. It is yellow liquid when anhydrous but readily forms a colorless crystalline hydrate. Upon heating, this polymer "cracks" to give back the yellow aldehyde. It contains both an aldehyde and a ketone functional group. Dissolution of phenylglyoxal in water gives crystals of the hydrate: C6H5C(O)COH + H2O → C6H5C(O)CH(OH)2Upon heating, the hydrate loses water and regenerates the anhydrous liquid. Alternatively, it can also be prepared by oxidation of acetophenone with selenium dioxide. It has also been used to attach chemical payload (probes) to the amino acid citrulline and to peptides/proteins. Like some other aldehydes, phenylglyoxal polymerizes upon standing, as indicated by solidification of the liquid.
Structure
Data?1677000634
Synonyms
ValueSource
PhenylglyoxalMeSH
Chemical FormulaC8H6O2
Average Molecular Weight134.132
Monoisotopic Molecular Weight134.036779436
IUPAC Name2-oxo-2-phenylacetaldehyde
Traditional Namephenylglyoxal
CAS Registry NumberNot Available
SMILES
O=CC(=O)C1=CC=CC=C1
InChI Identifier
InChI=1S/C8H6O2/c9-6-8(10)7-4-2-1-3-5-7/h1-6H
InChI KeyOJUGVDODNPJEEC-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phenylacetaldehydes. Phenylacetaldehydes are compounds containing a phenylacetaldehyde moiety, which consists of a phenyl group substituted at the second position by an acetalydehyde.
KingdomOrganic compounds
Super ClassBenzenoids
ClassBenzene and substituted derivatives
Sub ClassPhenylacetaldehydes
Direct ParentPhenylacetaldehydes
Alternative Parents
Substituents
  • Phenylacetaldehyde
  • Aryl ketone
  • Benzoyl
  • Alpha-ketoaldehyde
  • Ketone
  • Organic oxygen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organooxygen compound
  • Carbonyl group
  • Aldehyde
  • Aromatic homomonocyclic compound
Molecular FrameworkAromatic homomonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
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 Solubility1.96 g/LALOGPS
logP1.34ALOGPS
logP1.62ChemAxon
logS-1.8ALOGPS
pKa (Strongest Acidic)14.32ChemAxon
pKa (Strongest Basic)-7.8ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area34.14 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity37.32 m³·mol⁻¹ChemAxon
Polarizability13.09 ųChemAxon
Number of Rings1ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DarkChem[M+H]+128.91531661259
DarkChem[M-H]-125.14931661259
DeepCCS[M+H]+126.6630932474
DeepCCS[M-H]-123.13730932474
DeepCCS[M-2H]-160.36930932474
DeepCCS[M+Na]+135.72330932474
AllCCS[M+H]+126.732859911
AllCCS[M+H-H2O]+121.932859911
AllCCS[M+NH4]+131.132859911
AllCCS[M+Na]+132.432859911
AllCCS[M-H]-123.032859911
AllCCS[M+Na-2H]-124.532859911
AllCCS[M+HCOO]-126.232859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
PhenylglyoxalO=CC(=O)C1=CC=CC=C11825.1Standard polar33892256
PhenylglyoxalO=CC(=O)C1=CC=CC=C11113.1Standard non polar33892256
PhenylglyoxalO=CC(=O)C1=CC=CC=C11177.7Semi standard non polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Phenylglyoxal GC-MS (Non-derivatized) - 70eV, Positivesplash10-0a4i-1900000000-feebf6828b7d7a9864122017-09-20Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Phenylglyoxal 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 - Phenylglyoxal 10V, Positive-QTOFsplash10-000i-0900000000-0da9863845ac80a79bc42015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 20V, Positive-QTOFsplash10-000i-2900000000-3993b9e36bd0e1df8f8a2015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 40V, Positive-QTOFsplash10-004i-9000000000-9e6afa995f5f44145d2e2015-04-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 10V, Negative-QTOFsplash10-001i-0900000000-72cf846fa012eba481342015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 20V, Negative-QTOFsplash10-001i-4900000000-a9525c4588c184fbddcd2015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 40V, Negative-QTOFsplash10-004i-9000000000-b9f50b78ecb7cc2a24022015-04-25Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 10V, Positive-QTOFsplash10-0550-3900000000-a5702883d5a5ca5a61832021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 20V, Positive-QTOFsplash10-0a6r-4900000000-860717ec8d54f5e8e4d12021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 40V, Positive-QTOFsplash10-004i-9100000000-fbc40c541fd66ff3470d2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 10V, Negative-QTOFsplash10-0a59-0900000000-b3d6c02c7001060eb9672021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 20V, Negative-QTOFsplash10-057i-4900000000-9eece03c1aa0314a585e2021-09-24Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Phenylglyoxal 40V, Negative-QTOFsplash10-004i-9000000000-28ca63be4b8994c5b32c2021-09-24Wishart LabView Spectrum

NMR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted 1D NMR13C NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 100 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 1000 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 200 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 300 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 400 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 500 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 600 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 700 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 800 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR13C NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum
Predicted 1D NMR1H NMR Spectrum (1D, 900 MHz, D2O, predicted)2021-09-24Wishart LabView Spectrum

IR Spectra

Spectrum TypeDescriptionDeposition DateSourceView
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+H]+)2023-02-04FELIX labView Spectrum
Predicted IR SpectrumIR Ion Spectrum (Predicted IRIS Spectrum, Adduct: [M+Na]+)2023-02-04FELIX labView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Feces
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
FecesDetected but not QuantifiedNot QuantifiedAdult (>18 years old)Both
Normal
details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkPhenylglyoxal
METLIN IDNot Available
PubChem Compound14090
PDB IDNot Available
ChEBI IDNot Available
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 ReferencesNot Available