ALLOPURINOL
UNII 63CZ7GJN5I

Substance Identification & Data

This profile provides standardized clinical and technical data for Allopurinol, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 63CZ7GJN5I.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 315-30-0 and the RxNorm Concept ID (RxCUI) 519. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
63CZ7GJN5I
CAS Registry Number
315-30-0
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
ALLOPURINOL
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
63CZ7GJN5I
The specific atomic composition represented as a molecular structure string.
InChIKey
C5H4N4O
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
OFCNXPDARWKPPY-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
1731
Sequential identifier assigned via the WHO International Nonproprietary Name program.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
c12c([nH]cnc1=O)[nH]nc2

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Allopurinol. 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

ALLOPURINOL

Common Names & Synonyms

ALLOPURINOL [EP IMPURITY]
ALLOPURINOL [EP MONOGRAPH]
ALLOPURINOL [HSDB]
ALLOPURINOL [INN]
ALLOPURINOL [JAN]
ALLOPURINOL [MART.]
ALLOPURINOL [MI]
ALLOPURINOL [ORANGE BOOK]
ALLOPURINOL [USAN]
ALLOPURINOL [USP MONOGRAPH]
ALLOPURINOL [USP-RS]
ALLOPURINOL [WHO-DD]
ALLOPURINOL [WHO-IP]
ALLOPURINOLUM [WHO-IP]
SUSPENDOL
TAKANARUMIN

Brand / Trade Names

DUZALLO COMPONENT ALLOPURINOL
LOPURIN
ZYLOPRIM

Systematic Nomenclature

1,5-DIHYDRO-4H-PYRAZOLO(3,4-D)PYRIMIDIN-4-ONE
1H-PYRAZOLO(3,4-D)PYRIMIDIN-4-OL
4H-PYRAZOLO(3,4-D)PYRIMIDIN-4-ONE, 1,5-DIHYDRO-

Technical Codes

BW 56-158
BW-56-158
NSC-101655
NSC-1390

NDC Products Containing ALLOPURINOL

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