C.I. ACID RED 137
UNII X5F74RHC4G

Substance Identification & Data

This profile provides standardized clinical and technical data for C.i. Acid Red 137, uniquely identified by the FDA Unique Ingredient Identifier (UNII) X5F74RHC4G.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 6222-63-5 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
X5F74RHC4G
CAS Registry Number
6222-63-5
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
C.I. ACID RED 137
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C20H17N4O6S.Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
MSZHEEJTTAUDJC-XMXXDQCKSA-M
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(S(=O)(=O)[O-])c(/N=N/c2ccc(NC(=O)C)cc2)c(O)c3c(c1)cc(NC(=O)C)cc3.[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for C.i. Acid Red 137. 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

2-NAPHTHALENESULFONIC ACID, 7-(ACETYLAMINO)-3-(2-(4-(ACETYLAMINO)PHENYL)DIAZENYL)-4-HYDROXY-, SODIUM SALT
ATUL PAPER SCARLET A
AZO SCARLET Y
BLACKLEY FAST PAPER SCARLET N
BLACKLEY FAST SCARLET N
BRILLIANT CROCEIN FL
C.I. 17755
C.I. ACID RED 137
C.I. ACID RED 137, MONOSODIUM SALT
CALCOCID SCARLET Y
CI 17755
CI ACID RED 137
CI ACID RED 137, MONOSODIUM SALT

Systematic Nomenclature

2-NAPHTHALENESULFONIC ACID, 7-(ACETYLAMINO)-3-((4-(ACETYLAMINO)PHENYL)AZO)-4-HYDROXY-, MONOSODIUM SALT
2-NAPHTHALENESULFONIC ACID, 7-(ACETYLAMINO)-3-(2-(4-(ACETYLAMINO)PHENYL)DIAZENYL)-4-HYDROXY-, SODIUM SALT (1:1)

Technical Codes

NSC-75906