Inactive / Discontinued
CONGO RED FREE ACID
UNII 8KB6BS2FOH
Substance Identification & Data
This profile provides standardized clinical and technical data for Congo Red Free Acid, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 8KB6BS2FOH.
Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 14684-01-6 and the RxNorm Concept ID (RxCUI) 2391143. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.
Detailed Substance Profile
Preferred Name
CONGO RED FREE ACID
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C32H24N6O6S2 International Chemical Identifier digital signature for unique molecular identification.
SMILES String
HFHIDKQMGIGARX-ATXIYDNESA-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
OS(=O)(=O)c1cc(/N=N/c2ccc(cc2)-c3ccc(cc3)/N=N/c4cc(c5ccccc5c4N)S(O)(=O)=O)c(N)c6ccccc16
Synonyms and Nomenclature
This section provides a complete list of nomenclature and identifier mappings for Congo Red 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
C.I. DIRECT RED 28 FREE ACID
CONGO RED FREE ACID
Systematic Nomenclature
1-NAPHTHALENESULFONIC ACID, 3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(2,1-DIAZENEDIYL))BIS(4-AMINO-
1-NAPHTHALENESULFONIC ACID, 3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(AZO))BIS(4-AMINO-
3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(2,1-DIAZENEDIYL))BIS(4-AMINO-1-NAPHTHALENESULFONIC ACID)
NDC Products Containing CONGO RED FREE ACID
This unique ingredient identifier is listed as an ingredient or substance in the following products in the NDC directory:
