5-METHYL-3-PHENYLISOXAZOLE-4-CARBOXYLIC ACID
UNII ZL8HD4RP5B

Substance Identification & Data

This profile provides standardized clinical and technical data for 5-methyl-3-phenylisoxazole-4-carboxylic Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) ZL8HD4RP5B.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 1136-45-4 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
ZL8HD4RP5B
CAS Registry Number
1136-45-4
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
5-METHYL-3-PHENYLISOXAZOLE-4-CARBOXYLIC ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C11H9NO3
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
PENHKTNQUJMHIR-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
OC(=O)c1c(noc1C)-c2ccccc2

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for 5-methyl-3-phenylisoxazole-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

ISOXAZOLE CARBOXYLIC ANALOG [USP IMPURITY]
OXACILLIN RELATED COMPOUND C [USP IMPURITY]
OXACILLIN RELATED COMPOUND C [USP-RS]
OXACILLIN SODIUM MONOHYDRATE IMPURITY C [EP IMPURITY]

Systematic Nomenclature

4-ISOXAZOLECARBOXYLIC ACID, 5-METHYL-3-PHENYL-
5-METHYL-3-PHENYLISOXAZOLE-4-CARBOXYLIC ACID

Technical Codes

NSC-76870