NALIDIXIC ACID
UNII 3B91HWA56M

Substance Identification & Data

This profile provides standardized clinical and technical data for Nalidixic Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 3B91HWA56M.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 389-08-2 and the RxNorm Concept ID (RxCUI) 7240. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code

3B91HWA56M

CAS Registry Number

389-08-2

RxNorm Concept ID

7240

Detailed Substance Profile

Preferred Name

NALIDIXIC ACID

Official standardized name for this substance within the FDA UNII nomenclature system.

Molecular Formula

3B91HWA56M

The specific atomic composition represented as a molecular structure string.

InChIKey

C12H12N2O3

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

MHWLWQUZZRMNGJ-UHFFFAOYSA-N

Line notation for describing the chemical structure and connectivity of atoms.

NCI Thesaurus

C47630

National Cancer Institute reference terminology for clinical and research data.

PubChem CID

4421

Unique identification number in the NCBI database of chemical substances.

INN ID

1450

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(c(c2ccc(nc2n(c1)CC)C)=O)C(=O)O

Synonyms and Nomenclature

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