D&C RED NO. 33 FREE ACID
UNII 942D1H6FKF

Substance Identification & Data

This profile provides standardized clinical and technical data for D&c Red No. 33 Free Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 942D1H6FKF.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 2203-16-9 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

942D1H6FKF

CAS Registry Number

2203-16-9

RxNorm Concept ID

N/A

Detailed Substance Profile

Preferred Name

D&C RED NO. 33 FREE ACID

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

Molecular Formula

942D1H6FKF

The specific atomic composition represented as a molecular structure string.

InChIKey

C16H13N3O7S2

International Chemical Identifier digital signature for unique molecular identification.

SMILES String

UDCKXEFJOHLCKM-VHEBQXMUSA-N

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

PubChem CID

19117

Unique identification number in the NCBI database of chemical substances.

Substance Type

chemical

ISO 11238 classification category (e.g., Chemical, Polymer, Protein).

Ingredient Role

c1ccc(cc1)/N=N/c2c(cc3cc(cc(c3c2O)N)S(=O)(=O)O)S(=O)(=O)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for D&c Red No. 33 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.