Chemicals and Drugs

Erythrosine

A tetraiodofluorescein used as a red coloring in some foods (cherries, fish), as a disclosure of DENTAL PLAQUE, and as a stain of some cell types. It has structural similarity to THYROXINE.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A tetraiodofluorescein used as a red coloring in some foods (cherries, fish), as a disclosure of DENTAL PLAQUE, and as a stain of some cell types. It has structural similarity to THYROXINE.

Chemical Identity

Chemical Information

Molecular Formula
C20H8I4Na2O6
Molecular Weight
897.9 g/mol
CAS Registry No.
49746-10-3
IUPAC Name
disodium;2-(2,4,5,7-tetraiodo-3-oxido-6-oxoxanthen-9-yl)benzoate;hydrate
InChIKey
IVKWXPBUMQZFCW-UHFFFAOYSA-L
SMILES
C1=CC=C(C(=C1)C2=C3C=C(C(=O)C(=C3OC4=C(C(=C(C=C24)I)[O-])I)I)I)C(=O)[O-].O.[Na+].[Na+]
MeSH Unique ID
D004923
Source
PubChem CID 166534

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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Drug Class

Pharmacological Action

MeSH Record

Synonyms

7 entry terms
  • 2',4',5',7'-Tetraiodofluorescein
  • Erythrosin
  • Erythrosin B
  • Erythrosine B
  • F D & C #3
  • FD & C Red No. 3
  • FDC Red No. 3

MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analogs & derivatives, analysis, chemical synthesis, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity.

MeSH Record

Indexing Annotation

do not confuse with Erythrocin, a brand of ERYTHROMYCIN

MeSH Record

History Note

91(79); was see under FLUORESCEINS 1979-90

MeSH Record

Previous Indexing

  • Fluoresceins (1966-1978)

MeSH Hierarchy

Tree Numbers

  1. D02w.455w.426w.779w.347.350
  2. D03w.633.300.953.275.350
  3. D04w.711w.347.350

AMA Style

References

  1. National Library of Medicine. Erythrosine. Medical Subject Headings (MeSH). 2026. Unique ID D004923. http://id.nlm.nih.gov/mesh/2026/D004923
  2. Erythrosine. In: Wikidata. https://www.wikidata.org/wiki/Q27286643
  3. Erythrosine. In: PubChem Compound. CID 166534. https://pubchem.ncbi.nlm.nih.gov/compound/166534