Ethyl eosin may be used instead of Eosin Y ws to counterstain alum hematoxylin in the Hematoxylin and Eosin method. Ensure this compound is identified correctly when "alcohol soluble eosin" is required, as eosin Y ws is, itself, alcohol soluble, and eosinol Y is also known as eosin, spirit soluble.
Compare the structural formulae of some eosin homologues.
R. D. Lillie.
Conn's Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A.
Aldrich chemical catalogue, 1992
Aldrich Chemical Company, Milwaukee, WI, USA.
Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.