Ethyl eosin

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Ethyl eosin
IUPAC name ethyl 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoate
Synonyms Eosin, alcohol-soluble; Solvent red 45
Formula
C22H12Br4O5
Uses
dye
Hazards
irritant to eyes, skin and respiratory system
Mass (g/mol) CAS #
675.94 6359-05-3

Ethyl eosin is an alcohol-soluble relative of the water-soluble dye eosin. Like the latter, it is used in histology to stain tissues red. It is also common to use its Alkali salts.