FD&C RED NO. 3
UNII PN2ZH5LOQY

Substance Identification & Data

This profile provides standardized clinical and technical data for Fd&c Red No. 3, uniquely identified by the FDA Unique Ingredient Identifier (UNII) PN2ZH5LOQY.

Technical mappings include the Chemical Abstracts Service (CAS) Registry Number 49746-10-3 and the RxNorm Concept ID (RxCUI) 1366961. Explore the sections below for detailed nomenclature and a complete directory of NDC-listed products containing this ingredient.

FDA UNII Code
PN2ZH5LOQY
CAS Registry Number
49746-10-3
RxNorm Concept ID

Detailed Substance Profile

Preferred Name
FD&C RED NO. 3
Official standardized name for this substance within the FDA UNII nomenclature system.
Molecular Formula
PN2ZH5LOQY
The specific atomic composition represented as a molecular structure string.
InChIKey
C20H6I4O5.2Na.H2O
International Chemical Identifier digital signature for unique molecular identification.
SMILES String
IVKWXPBUMQZFCW-UHFFFAOYSA-L
Line notation for describing the chemical structure and connectivity of atoms.
NCI Thesaurus
National Cancer Institute reference terminology for clinical and research data.
PubChem CID
Unique identification number in the NCBI database of chemical substances.
Substance Type
chemical
ISO 11238 classification category (e.g., Chemical, Polymer, Protein).
Ingredient Role
c1([O-])c(c2c(c(-c3ccccc3C([O-])=O)c4-c(o2)c(c(=O)c(I)c4)I)cc1I)I.[Na+].O.[Na+]

Synonyms and Nomenclature

This section provides a complete list of nomenclature and identifier mappings for Fd&c Red No. 3. 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

ACID RED 51
AKA3
CI 45430

Common Names & Synonyms

2',4',5',7'-TETRAIODOFLUORESCEIN DISODIUM SALT MONOHYDRATE
9- (O- CARBOXYPHENYL)-6-HYDROXY - 2,4,5,7-TETRAIODO- MONOHYDRATE
C.I. 45430
C.I. ACID RED 51
C.I. FOOD RED 14
DYE FDC RED #3 [VANDF]
E127
ERYTHROSINE
ERYTHROSINE [FCC]
ERYTHROSINE [MART.]
ERYTHROSINE [WHO-DD]
ERYTHROSINE B
ERYTHROSINE SODIUM
ERYTHROSINE SODIUM [USP IMPURITY]
ERYTHROSINE, SODIUM MONOHYDRATE
F D & C RED #3 [VANDF]
F D & C RED #3 ALUMINUM LAKE [VANDF]
F D & C RED NO. 3
FD&C RED 3
FD&C RED NO. 3
FD&C RED NO. 3 [FCC]
FD&C RED NO. 3 [II]
FLUORESCEIN, 2',4',5',7'-TETRAIODO-, DISODIUM SALT
FOOD RED 14
JAPAN RED 3
RED 1799
RED 3
SPIRO(ISOBENZOFURAN-1(3H),9'-(9H)XANTHEN)-3-ONE, 3',6'-DIHYDROXY-2',4',5',7'-TETRAIODO-, DISODIUM SALT, MONOHYDRATE
YELLOW NO. 201

Systematic Nomenclature

DISODIUM 2-(2,4,5,7-TETRAIODO-6-OXIDO-3-OXOXANTHEN-9-YL)BENZOATE

Technical Codes

C.I.(1975)NO.45430
E-127
INS NO.127
INS-127

NDC Products Containing FD&C RED NO. 3

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