DIRECT RED 73 FREE ACID
UNII X4845Q43AP

Substance Identification & Data

This profile provides standardized clinical and technical data for Direct Red 73 Free Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) X4845Q43AP.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 739301-94-1 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
X4845Q43AP
CAS Registry Number
739301-94-1
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
DIRECT RED 73 FREE ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C38H28N6O12S3
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
MTYFLWBSAJJYJS-CHQNLTHESA-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(cc2cc(ccc2c(O)c1/N=N/c3ccccc3C)NC(=O)Nc4ccc5c(cc(c(/N=N/c6ccc7cc(ccc7c6)S(=O)(=O)O)c5O)S(=O)(=O)O)c4)S(=O)(=O)O

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Direct Red 73 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.

Common Names & Synonyms

DIRECT RED 73 FREE ACID

Systematic Nomenclature

2-NAPHTHALENESULFONIC ACID, 4-HYDROXY-7-((((5-HYDROXY-6-(2-(2-METHYLPHENYL)DIAZENYL)-7-SULFO-2-NAPHTHALENYL)AMINO)CARBONYL)AMINO)-3-(2-(6-SULFO-2-NAPHTHALENYL)DIAZENYL)-
4-HYDROXY-7-((((5-HYDROXY-6-(2-(2-METHYLPHENYL)DIAZENYL)-7-SULFO-2-NAPHTHALENYL)AMINO)CARBONYL)AMINO)-3-(2-(6-SULFO-2-NAPHTHALENYL)DIAZENYL)-2-NAPHTHALENESULFONIC ACID

External Clinical & Regulatory Resources

CAS
Common Chemistry
NCATS
Inxight Drugs
NLM
DailyMed Products
NCATS
GSRS Full Record