HYDROXYNAPHTHOL BLUE
UNII VG5SKF7S6C

Substance Identification & Data

This profile provides standardized clinical and technical data for Hydroxynaphthol Blue, uniquely identified by the FDA Unique Ingredient Identifier (UNII) VG5SKF7S6C.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 63451-35-4 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
VG5SKF7S6C
CAS Registry Number
63451-35-4
RxNorm Concept ID
N/A

Detailed Substance Profile

Preferred Name
HYDROXYNAPHTHOL BLUE
Official standardized name for this substance within the FDA UNII nomenclature system.
InChIKey
C20H11N2O11S3.3Na
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
AUIINJJXRXMPGT-ZRUFZDNISA-K
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(/N=N/c3c4ccccc4c(S(=O)(=O)[O-])cc3O)c(O)c(S(=O)(=O)[O-])cc1cc(S(=O)(=O)[O-])cc2.[Na+].[Na+].[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Hydroxynaphthol Blue. 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, 3-HYDROXY-4-((2-HYDROXY-4-SULFO-1-NAPHTHALENYL)AZO)-, TRISODIUM SALT
2,7-NAPHTHALENEDISULFONIC ACID, 3-HYDROXY-4-(2-(2-HYDROXY-4-SULFO-1-NAPHTHALENYL)DIAZENYL)-, SODIUM SALT (1:3)
HYDROXY NAPHTHOL BLUE
HYDROXYNAPHTHOL BLUE

Systematic Nomenclature

SODIUM 3-HYDROXY-4-((2-HYDROXY-4-SULFONATONAPHTHALEN-1-YL)DIAZENYL)NAPHTHALENE-2,7-DISULFONATE