| gptkbp:instanceOf | gptkb:hydantoin_derivative gptkb:anticonvulsant
 
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                                | gptkbp:ATCCode | N03AB03 
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                                | gptkbp:CASNumber | 50-12-4 
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                                | gptkbp:chemicalFormula | C12H12N2O2 
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                                | gptkbp:contraindication | gptkb:porphyria 
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                                | gptkbp:discoveredBy | gptkb:H._Houston_Merritt gptkb:Tracy_Putnam
 
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                                | gptkbp:discoveredIn | 1940s 
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                                | gptkbp:eliminationHalfLife | 7-15 hours 
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                                | gptkbp:hasInChIKey | QXDMGPKYFZVEMY-UHFFFAOYSA-N 
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                                | gptkbp:hasSMILES | CC1(C(=O)NC(=O)N1C)C2=CC=CC=C2 
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                                | gptkbp:IUPACName | 5-ethyl-3-methyl-5-phenyl-imidazolidine-2,4-dione 
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                                | gptkbp:legalStatus | prescription only 
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                                | gptkbp:meltingPoint | 162-164°C 
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                                | gptkbp:metabolism | gptkb:CYP2C19 
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                                | gptkbp:molecularWeight | 216.24 g/mol 
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                                | gptkbp:pregnancyCategory | D (US) 
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                                | gptkbp:PubChem_CID | 4057 CHEMBL1201
 3917
 DB00334
 
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                                | gptkbp:relatedTo | gptkb:phenytoin ethotoin
 
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                                | gptkbp:retired | risk of severe adverse effects 
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                                | gptkbp:routeOfAdministration | oral 
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                                | gptkbp:sideEffect | rash drowsiness
 ataxia
 
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                                | gptkbp:status | withdrawn in many countries 
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                                | gptkbp:synonym | 3-methyl-5-ethyl-5-phenylhydantoin Mesantoin
 
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                                | gptkbp:UNII | 6Q6P4776YS 
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                                | gptkbp:usedFor | treatment of epilepsy 
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                                | gptkbp:bfsParent | gptkb:CYP2C19 gptkb:CYP2C19_gene
 gptkb:Cytochrome_P450_2C19
 
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                                | gptkbp:bfsLayer | 8 
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                                | https://www.w3.org/2000/01/rdf-schema#label | mephenytoin 
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