DIRECT BLACK 166
UNII XY4YK52V2L

Substance Identification & Data

This profile provides standardized clinical and technical data for Direct Black 166, uniquely identified by the FDA Unique Ingredient Identifier (UNII) XY4YK52V2L.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 57131-19-8 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
XY4YK52V2L
CAS Registry Number
57131-19-8
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
DIRECT BLACK 166
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C35H26N10O8S2.2Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
HADJHXHBAFQEAO-OTVSVDOTSA-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
Nc1c2c(cc(S(=O)(=O)[O-])c1/N=N/c3ccc(C(Nc4ccc(/N=N/c5c(N)cc(N)cc5)cc4)=O)cc3)cc(S(=O)(=O)[O-])c(/N=N/c6ccccc6)c2O.[Na+].[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Direct Black 166. 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

2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-3-((4-(((4-((2,4-DIAMINOPHENYL)AZO)PHENYL)AMINO)CARBONYL)PHENYL)AZO)-5-HYDROXY-6-(PHENYLAZO)-, DISODIUM SALT
2,7-NAPHTHALENEDISULFONIC ACID, 4-AMINO-3-(2-(4-(((4-(2-(2,4-DIAMINOPHENYL)DIAZENYL)PHENYL)AMINO)CARBONYL)PHENYL)DIAZENYL)-5-HYDROXY-6-(2-PHENYLDIAZENYL)-, SODIUM SALT (1:2)
C.I. DIRECT BLACK 166
DIRECT BLACK 166

External Clinical & Regulatory Resources

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