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erythrosine
Also known as Red No. 3, tetraiodofluorescein, 2-(6-Hydroxy-2,4,5,7-tetraiodo-3-oxo-xanthen-9-yl)benzoic acid, Food Red 14, E127
Erythrosine, also known as E127 and Red No. 3, is an organoiodine compound, specifically a derivative of fluorone. It is a red-pink dye used for food coloring, cosmetics, hair coloring, pet products, and diverse industrial colorings. It is the disodium salt of 2,4,5,7-tetraiodofluorescein.
Chemical data
- Formula
- C20H8I4O5
- Molecular weight
- 835.9 g/mol
- IUPAC name
- 3',6'-dihydroxy-2',4',5',7'-tetraiodospiro[2-benzofuran-3,9'-xanthene]-1-one
- SMILES
- C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C(=C4OC5=C(C(=C(C=C35)I)O)I)I)O)I
- InChIKey
- OALHHIHQOFIMEF-UHFFFAOYSA-N
- XLogP
- 6
- Polar surface area
- 76 Ų
- H-bond donors
- 2
- H-bond acceptors
- 5
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
~5 min read
Article
7 sectionsContents
- History
- Production
- Uses
- Safety assessment and regulation
- Synonyms
- Classification
- References
Erythrosine, also known as E127 and Red No. 3, is an organoiodine compound, specifically a derivative of fluorone. It is a red-pink dye used for food coloring, cosmetics, hair coloring, pet products, and diverse industrial colorings. It is the disodium salt of 2,4,5,7-tetraiodofluorescein.
==History==