PHENYTOIN
UNII 6158TKW0C5

Substance Identification & Data

This profile provides standardized clinical and technical data for Phenytoin, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 6158TKW0C5.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 57-41-0 and the RxNorm Concept ID (RxCUI) 8183. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
6158TKW0C5
CAS Registry Number
57-41-0
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
PHENYTOIN
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
6158TKW0C5
The specific atomic composition represented as a molecular structure string.
InChIKey
C15H12N2O2
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
CXOFVDLJLONNDW-UHFFFAOYSA-N
Line notation for describing the chemical structure and connectivity of atoms.
NCI Thesaurus
National Cancer Institute reference terminology for clinical and research data.
PubChem CID
Unique identification number in the NCBI database of chemical substances.
INN ID
416
Sequential identifier assigned via the WHO International Nonproprietary Name program.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
C1(NC(=O)NC1(c2ccccc2)c3ccccc3)=O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Phenytoin. Identifiers are organized into official regulatory terms, commercial trade names, and technical systematic synonyms used to ensure accurate identification across clinical pharmaceutical databases, regulatory filings, and electronic health records.

FDA Official Name

PHENYTOIN

Common Names & Synonyms

LEPITOIN
PHENYTOIN [EP MONOGRAPH]
PHENYTOIN [HSDB]
PHENYTOIN [IARC]
PHENYTOIN [INN]
PHENYTOIN [JAN]
PHENYTOIN [MART.]
PHENYTOIN [MI]
PHENYTOIN [ORANGE BOOK]
PHENYTOIN [USAN]
PHENYTOIN [USP IMPURITY]
PHENYTOIN [USP MONOGRAPH]
PHENYTOIN [USP-RS]
PHENYTOIN [VANDF]
PHENYTOIN [WHO-DD]
PHENYTOIN [WHO-IP]
PHENYTOINUM [WHO-IP LATIN]
ZENTROPIL

Brand / Trade Names

DILANTIN
EPAMIN

Systematic Nomenclature

2,4-IMIDAZOLIDINEDIONE, 5,5-DIPHENYL-
5,5-DIPHENYLHYDANTOIN

Technical Codes

NSC-8722
SM-88 COMPONENT PHENYTOIN

NDC Products Containing PHENYTOIN

This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory: