DIRECT BLUE 6
UNII 21ZL85SYWM

Substance Identification & Data

This profile provides standardized clinical and technical data for Direct Blue 6, uniquely identified by the FDA Unique Ingredient Identifier (UNII) 21ZL85SYWM.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 2602-46-2 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
21ZL85SYWM
CAS Registry Number
2602-46-2
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
DIRECT BLUE 6
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C32H20N6O14S4.4Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
MPCYPRXRVWZKGF-OTGYWJPESA-J
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
c12c(c(c(/N=N/c3ccc(-c4ccc(/N=N/c5c(cc6cc(S(=O)(=O)[O-])cc(c6c5O)N)S(=O)(=O)[O-])cc4)cc3)c(c1)S(=O)(=O)[O-])O)c(cc(c2)S(=O)(=O)[O-])N.[Na+].[Na+].[Na+].[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Direct Blue 6. 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 BLUE 6
C.I. DIRECT BLUE 6 [HSDB]
C.I. DIRECT BLUE 6, TETRASODIUM SALT
CI 22610
CI DIRECT BLUE 6
CI DIRECT BLUE 6 [IARC]
DIRECT BLUE 6

Brand / Trade Names

DIRECT SKY BLUE K
INDIGO BLUE 2B

Systematic Nomenclature

1-NAPHTHOL-3,6-DISULFONIC ACID, 2,2'-(4,4'-BIPHENYLYLENEBISAZO)BIS(8-AMINO-, TETRASODIUM SALT
2,7-NAPHTHALENEDISULFONIC ACID, 3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(2,1-DIAZENEDIYL))BIS(5-AMINO-4-HYDROXY-, SODIUM SALT (1:4)
2,7-NAPHTHALENEDISULFONIC ACID, 3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(AZO))BIS(5-AMINO-4-HYDROXY-, TETRASODIUM SALT
2,7-NAPHTHALENEDISULFONIC ACID, 3,3'-((4,4'- BIPHENYLYLENE)BIS(AZO))BIS(5-AMINO-4-HYDROXY-, TETRASODIUM SALT
TETRASODIUM 3,3'-((1,1'-BIPHENYL)-4,4'-DIYLBIS(AZO))BIS(5- AMINO-4-HYDROXYNAPHTHALENE-2,7-DISULPHONATE)

Technical Codes

NSC-9614