C15H12N2O2
252.27 g/mol
APIDanger
Phenytoin
CAS57-41-0EC200-328-6
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Phenytoin is an active pharmaceutical ingredient primarily used in the manufacturing of medications for epilepsy. It is also noted for potential developmental toxicity and carcinogenicity based on expert evaluation.
antiepileptic drug substancepharmaceutical raw material for anticonvulsant formulations
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 57-41-0
Related Compounds
ReferenceSame Category
Barbital
CAS57-44-3
pharmaceutical raw material
ReferenceSame Category
Meprobamate
CAS57-53-4
pharmaceutical raw material
ReferenceSame Category
Ethinylestradiol
CAS57-63-6
pharmaceutical raw material
ReferenceSame Category
Physostigmine salicylate
CAS57-64-7
pharmaceutical raw material
Referencestereoisomer of
Phenytoin sodium
CAS630-93-3
pharmaceutical raw material
Referencesame scaffold
Fosphenytoin sodium
CAS92134-98-0
pharmaceutical raw material
Safety Reference
Danger
H302Harmful if swallowed
H350May cause cancer
H351Suspected of causing cancer
H360May damage fertility or the unborn child
H402Harmful to aquatic life
H412Harmful to aquatic life with long lasting effects
H340May cause genetic defects
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Phenytoin (CAS 57-41-0) is 2933.21.
HS code (international, 6-digit)
2933.21
EU CN code (8-digit)
2933 21 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
5,5-diphenylimidazolidine-2,4-dione
InChIKey
CXOFVDLJLONNDW-UHFFFAOYSA-N
SMILES
C1=CC=C(C=C1)C2(C(=O)NC(=O)N2)C3=CC=CC=C3
Synonyms (196)
- TOIN
- Fenitoina [INN-Spanish]
- Phenytoin (JP18/USP/INN)
- Phenytoin for system suitability, European Pharmacopoeia (EP)
- Phenytoin, European Pharmacopoeia (EP)
- Phenytoin, United States Pharmacopeia (USP)
- Phenytoine [INN-French]
- Phenytoinum [INN-Latin]
- 2, 5,5-diphenyl-
- 5,5-DIPHENYLHYDANTOIN
- 5,5-Diphenylhydantoin (IUPAC)
- 5,5-Dwufenylohydantoina
- Aladdin (Salt/Mix)
- Alepsin (Salt/Mix)
- Aleviatin
- Antisacer (Salt/Mix)
- Auranile
- Causoin
- Citrullamon
- Citrullamon (Salt/Mix)
- Citrulliamon
- Comital
- Comitoina
- Convul
- DPH (VAN)
- Danten
- Dantinal
- Dantoinal
- Dantoinal klinos
- Dantoine
- Denyl
- Di-Hydan
- Di-Lan
- Di-Lan (VAN)
- Di-Phetine
- Didan TDC 250
- Difenilhidantoina
- Difenilhidantoina [Spanish]
- Difenin
- Difetoin
- Difhydan
- Dihycon
- Dihydantoin
- Dilabid
- Dilantin
- Dilantin (TN)
- Dilantin Infatabs
- Dilantin acid
- Dilantine
- Dillantin
- Dintoin
- Dintoina
- Diphantoin
- Diphedal
- Diphedan
- Diphenat
- Diphenin
- Diphenine
- Diphentoin
- Diphentyn
- Diphenylan
- Diphenylhydantoin
- Diphenylhydantoin (VAN)
- Diphenylhydantoine
- Diphenylhydantoine [French]
- Diphenylhydatanoin
- Ditoinate
- Ekko
- Ekko capsules
- Elepsindon
- Enkelfel
- Epamin
- Epanutin
- Epasmir 5
- Epdantoin (Salt/Mix)
- Epdantoin Simple
- Epdantoine simple
- Epelin
- Epifenyl
- Epihydan
- Epilan
- Epilan-D
- Epilantin
- Epileptin (Salt/Mix)
- Epinat
- Episar (Salt/Mix)
- Epised
- Epsolin (Salt/Mix)
- Epsolin;
- Eptal
- Eptoin
- Fenantoin
- Fenantoin Mn Pharma
- Fenidantoin s
- Fenigramon (Salt/Mix)
- Fenitoin
- Fenitoina
- Fentoin
- Fenylepsin
- Fenytoin Dak
- Fenytoine
- Gerot-epilan-D
- Hidan
- Hidantal
- Hidantilo
- Hidantina
- Hidantina senosian
- Hidantina vitoria
- Hidantomin
- Hindatal
- Hydantal
- Hydantin
- Hydantoin, 5,5-diphenyl-
- Hydantoin,5-diphenyl-
- Hydantoinal
- Hydantol
- Ictalis simple
- Idantoil
- Idantoin
- Iphenylhydantoin
- Kessodanten
- Labopal
- Lehydan
- Lepitoin
- Lepsin
- Minetoin
- Neos-Hidantoina
- Neosidantoina
- Novantoina
- Novophenytoin
- Om hidantoina simple
- Om-Hydantoine
- Oxylan
- PHENYTOIN COMPONENT OF SM-88
- PHENYTOIN [MART.]
- Pentran;
- Phanantin
- Phanatine
- Phenantoin;
- Phenatoine
- Phenhydan;
- Phenhydanin
- Phenitoin
- Phentoin
- Phentytoin
- Phenythoin
- Phenytoin (Lepitoin)
- Phenytoin (Standard)
- Phenytoin AWD
- Phenytoin CRS
- Phenytoin Infatabs
- Phenytoin RS
- Phenytoin, 1mg/ml in Methanol
- Phenytoin-Gerot
- Phenytoine
- Phenytoinum
- Pyoredol;
- Ritmenal
- SM-88 COMPONENT PHENYTOIN
- Saceril
- Sanepil
- Silantin
- Sinergina
- Sodanthon
- Sodantoin
- Sodanton
- Solantin
- Solantoin
- Solantyl
- Soluble phenytoin (Salt/Mix)
- Sylantoic
- Tacosal (Salt/Mix)
- Thilophenyl
- Toin unicelles
- Zentronal
- Zentropil
- component of Mebroin
- phenytoin
- phenytoin (PHN)