Record Information
Version1.0
Creation Date2016-05-25 18:21:05 UTC
Update Date2016-11-09 01:17:26 UTC
Accession NumberCHEM022130
Identification
Common NameMephenytoin
ClassSmall Molecule
DescriptionAn imidazolidine-2,4-dione (hydantoin) in which the imidazolidine nucleus carries a methyl group at N-3 and has ethyl and phenyl substituents at C-5. An anticonvulsant, it is no longer available in the USA or the UK but is still studied largely because of its interesting hydroxylation polymorphism.
Contaminant Sources
  • HMDB Contaminants - Urine
  • STOFF IDENT Compounds
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
DL-MephenytoinChEBI
MefenitoinaChEBI
MephenytoineChEBI
MephenytoinumChEBI
MethylphenetoinChEBI
PhenylethylmethylhydantoinChEBI
MesantoinKegg
MephentoinHMDB
Methyl hydantoinHMDB
5 Ethyl 3 methyl 5 phenylhydantoinMeSH, HMDB
5-Ethyl-3-methyl-5-phenylhydantoinMeSH, HMDB
Phenetoin, methylMeSH, HMDB
MethoinMeSH, HMDB
Methyl phenetoinMeSH, HMDB
PhenantoinMeSH, HMDB
MefenetoinMeSH, HMDB
Chemical FormulaC12H14N2O2
Average Molecular Mass218.252 g/mol
Monoisotopic Mass218.106 g/mol
CAS Registry Number50-12-4
IUPAC Name5-ethyl-3-methyl-5-phenylimidazolidine-2,4-dione
Traditional Namemephenytoin
SMILESCCC1(NC(=O)N(C)C1=O)C1=CC=CC=C1
InChI IdentifierInChI=1S/C12H14N2O2/c1-3-12(9-7-5-4-6-8-9)10(15)14(2)11(16)13-12/h4-8H,3H2,1-2H3,(H,13,16)
InChI KeyGMHKMTDVRCWUDX-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as phenylhydantoins. These are heterocyclic aromatic compounds containing an imiazolidinedione moiety substituted by a phenyl group.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassAzolidines
Sub ClassImidazolidines
Direct ParentPhenylhydantoins
Alternative Parents
Substituents
  • 5-phenylhydantoin
  • Phenylimidazolidine
  • Alpha-amino acid or derivatives
  • N-acyl urea
  • Ureide
  • Monocyclic benzene moiety
  • Benzenoid
  • Dicarboximide
  • Urea
  • Carbonic acid derivative
  • Carboxylic acid derivative
  • Azacycle
  • Hydrocarbon derivative
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic nitrogen compound
  • Carbonyl group
  • Organic oxygen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.97 g/LALOGPS
logP1.64ALOGPS
logP1.67ChemAxon
logS-2.4ALOGPS
pKa (Strongest Acidic)11.18ChemAxon
pKa (Strongest Basic)-8.1ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count1ChemAxon
Polar Surface Area49.41 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity59.54 m³·mol⁻¹ChemAxon
Polarizability22.67 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0f79-2900000000-af8712fc36e2b911e9a8Spectrum
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0f79-2900000000-af8712fc36e2b911e9a8Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0ue9-1900000000-76ba03e4694ef29def3bSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-qTof , Positivesplash10-0159-3901000000-d726d8591f6fd6b87a0aSpectrum
LC-MS/MSLC-MS/MS Spectrum - , positivesplash10-0159-3901000000-d726d8591f6fd6b87a0aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-0490000000-8c8bcd12840df6ae00f2Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-0920000000-360996524b6c1cdc8fe3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0ue9-6900000000-5f6a566d2e8972a3e79cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0290000000-de9e2d95bc7cf0aea9acSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-014i-7590000000-9cb9accf3f7737fa1483Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-000x-9600000000-a00ec47fefbdc60a200aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-0190000000-8b9cb11606c241146d8bSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-00lr-1900000000-a867b49304e4c2814177Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014i-6900000000-2fd710ba16d058127ae9Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-014i-0090000000-4f94e1f66d72d6972b8aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-000i-2900000000-be298ddea23898cbfbc6Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-01ox-6900000000-8676a25532452b4ac29bSpectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB00532
HMDB IDHMDB0257078
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkMephenytoin
Chemspider ID3920
ChEBI ID6757
PubChem Compound IDNot Available
Kegg Compound IDNot Available
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. https://www.ncbi.nlm.nih.gov/pubmed/?term=11422005
2. https://www.ncbi.nlm.nih.gov/pubmed/?term=15282764
3. https://www.ncbi.nlm.nih.gov/pubmed/?term=25797720
4. https://www.ncbi.nlm.nih.gov/pubmed/?term=29438107