KUS-121 FREE ACID
UNII KWL59W4L66

Substance Identification & Data

This profile provides standardized clinical and technical data for Kus-121 Free Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) KWL59W4L66.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 1357245-09-0 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

KWL59W4L66

CAS Registry Number

1357245-09-0

RxNorm Concept ID

N/A

Detailed Substance Profile

Preferred Name

KUS-121 FREE ACID

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

InChIKey

C22H17FN4O3S

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

QOLHSSNEBRFIEQ-CYYJNZCTSA-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

Cc1c(ccc(F)c1)-c2ncc(/N=N/c3c(N)c4ccccc4c(c3)S(O)(=O)=O)cc2

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Kus-121 Free 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.