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Certified by the Biological Stain Commission (BSC)
(C.I. 45410) CAS 18472-87-2
Part of the xanthylium class of dyes
A component in Mallory’s phloxine B-methylene blue-azure II stain solution
Also used in Kreyberg method for keratin and mucin
Used as a counterstain for hematoxylin when blended with Eosin Y