FD&C RED NO. 4
UNII X3W0AM1JLX

Substance Identification & Data

This profile provides standardized clinical and technical data for Fd&c Red No. 4, uniquely identified by the FDA Unique Ingredient Identifier (UNII) X3W0AM1JLX.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 4548-53-2 and the RxNorm Concept ID (RxCUI) 1310575. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
X3W0AM1JLX
CAS Registry Number
4548-53-2
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
FD&C RED NO. 4
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
X3W0AM1JLX
The specific atomic composition represented as a molecular structure string.
InChIKey
C18H14N2O7S2.2Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
ONTQJDKFANPPKK-LLIZZRELSA-L
Line notation for describing the chemical structure and connectivity of atoms.
NCI Thesaurus
National Cancer Institute reference terminology for clinical and research data.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
N(\c1cc(c(cc1C)C)S([O-])(=O)=O)=N/c2cc(S([O-])(=O)=O)c3c(c2O)cccc3.[Na+].[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Fd&c Red No. 4. 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

AKA504
CI 14700
PONCEAU SX
RED 4

Common Names & Synonyms

1-NAPHTHALENESULFONIC ACID, 3-((2,4-DIMETHYL-5-SULFOPHENYL)AZO)-4-HYDROXY-, DISODIUM SALT
1-NAPHTHALENESULFONIC ACID, 3-(2-(2,4-DIMETHYL-5-SULFOPHENYL)DIAZENYL)-4-HYDROXY-, SODIUM SALT (1:2)
1-NAPHTHALENESULFONIC ACID, 4-HYDROXY-3-((6-SULFO-2,4-XYLYL)AZO)-, DISODIUM SALT
3-((2,4-DIMETHYL-5-SULFOPHENYL)AZO)-4-HYDROXY-1-NAPHTHALENESULFO
3-((2,4-DIMETHYL-5-SULFOPHENYL)AZO)-4-HYDROXY-1-NAPHTHALENESULFONIC ACID, DISODIUM SALT
CRIMSON 4R
FD&C RED 4
FD&C RED NO. 4
FD&C RED NO. 4 [II]
FDC RED NO. 4
FOOD RED 1
PONCEAU SX [IARC]
PONCEAU SX [MI]
SCARLET GN

Systematic Nomenclature

DISODIUM 3-((2,4-DIMETHYL-5-SULPHONATOPHENYL)AZO)-4-HYDROXYNAPHTHALENE-1-SULPHONATE

NDC Products Containing FD&C RED NO. 4

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