Inactive / Discontinued
CYTOSINE
UNII 8J337D1HZY
Substance Identification & Data
This profile provides standardized clinical and technical data for Cytosine, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 8J337D1HZY.
Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 71-30-7 and the RxNorm Concept ID (RxCUI) 1372540. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.
Detailed Substance Profile
Preferred Name
CYTOSINE
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
8J337D1HZY
The specific atomic composition represented as a molecular structure string.
InChIKey
C4H5N3O International Chemical Identifier digital signature for unique molecular identification.
SMILES String
OPTASPLRGRRNAP-UHFFFAOYSA-N Line notation for describing the chemical structure and connectivity of atoms.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
c1c[nH]c(=O)nc1N
Synonyms and Nomenclature
This section provides a complete list of nomenclature and identifier mappings for Cytosine. 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
CYTOSINE
Common Names & Synonyms
4-AMINOURACIL
CYTOSINE [MI]
CYTOSINE [USP-RS]
CYTOSINE [WHO-DD]
LAMIVUDINE IMPURITY C [USP IMPURITY]
LAMIVUDINE IMPURITY E [EP IMPURITY]
Systematic Nomenclature
4-AMINOPYRIMIDIN-2(1H)-ONE
CYTOSINIMINE
Technical Codes
NSC-27787
NDC Products Containing CYTOSINE
This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory:
