ACID RED 1
UNII 3365R6427R

Substance Identification & Data

This profile provides standardized clinical and technical data for Acid Red 1, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 3365R6427R.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 3734-67-6 and the RxNorm Concept ID (RxCUI) 1863219. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
3365R6427R
CAS Registry Number
3734-67-6
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
ACID RED 1
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
3365R6427R
The specific atomic composition represented as a molecular structure string.
InChIKey
C18H13N3O8S2.2Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
WXLFIFHRGFOVCD-SERMZQFOSA-L
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
c12c(c(c(cc2cc(S(=O)(=O)[O-])cc1NC(C)=O)S(=O)(=O)[O-])/N=N/c3ccccc3)O.[Na+].[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Acid Red 1. 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.

FDA Official Name

CI 18050

Common Names & Synonyms

1379 RED
ACID RED 1
AZOGERANINE
C.I. ACID RED 1
C.I. ACID RED 1, DISODIUM SALT
CI (1975) NO. 18050
CI ACID RED 1
CI ACID RED 1, DISODIUM SALT
CI FOOD RED 10
COLOUR INDEX 18050 ACID RED 1
E 128
E-128
FABRACID RED S 2G
INS NO.128
INS-128
LISSAMINE RED 2G
RED 2G
WATER RED 177614

Systematic Nomenclature

1-NAPHTHOL-3,6-DISULFONIC ACID, 8-ACETAMIDO-2-PHENYLAZO-, DISODIUM SALT
2,7-NAPHTHALENEDISULFONIC ACID, 5-(ACETYLAMINO)-4-HYDROXY-3-(2-PHENYLDIAZENYL)-, SODIUM SALT (1:2)
2,7-NAPHTHALENEDISULFONIC ACID, 5-(ACETYLAMINO)-4-HYDROXY-3-(PHENYLAZO)-, DISODIUM SALT

Technical Codes

NSC-47709
NSC-8666

NDC Products Containing ACID RED 1

This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory: