DIRECT YELLOW 4 FREE ACID
UNII 35KMX2FK8K

Substance Identification & Data

This profile provides standardized clinical and technical data for Direct Yellow 4 Free Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 35KMX2FK8K.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 91-34-9 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

35KMX2FK8K

CAS Registry Number

91-34-9

RxNorm Concept ID

N/A

Detailed Substance Profile

Preferred Name

DIRECT YELLOW 4 FREE ACID

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

InChIKey

C26H20N4O8S2

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

HNJRBCJUHORNHV-YGCIHOFZSA-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

c1(c(cc(cc1)/N=N/c2ccc(cc2)O)S(=O)(=O)O)/C=C/c3c(cc(cc3)/N=N/c4ccc(cc4)O)S(=O)(=O)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Direct Yellow 4 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.