5-METHYLISOXAZOLE-4-CARBOXYLIC ACID
UNII BL2Q213Q2M

Substance Identification & Data

This profile provides standardized clinical and technical data for 5-methylisoxazole-4-carboxylic Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) BL2Q213Q2M.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 42831-50-5 and the RxNorm Concept ID (RxCUI) N/A. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
BL2Q213Q2M
CAS Registry Number
42831-50-5
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
5-METHYLISOXAZOLE-4-CARBOXYLIC ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C5H5NO3
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
VQBXUKGMJCPBMF-UHFFFAOYSA-N
Line notation for describing the chemical structure and connectivity of atoms.
PubChem CID
Unique identification number in the NCBI database of chemical substances.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
Cc1c(cno1)C(=O)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for 5-methylisoxazole-4-carboxylic 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.

Common Names & Synonyms

4-ISOXAZOLECARBOXYLIC ACID, 5-METHYL-
LEFLUNOMIDE IMPURITY D [EP IMPURITY]
LEFLUNOMIDE IMPURITY, 5-METHYLISOXAZOLE-CARBOXYLIC ACID- [USP IMPURITY]

Systematic Nomenclature

5-METHYLISOXAZOLE-4-CARBOXYLIC ACID