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

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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.

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