Cresyl Fast Violet,9-Amino-5-imino-5H-benzo(a)phenoxazine acetate salt,CI 5118,Purity Limit? 65.% (Dye content)Molecular FormulaC18H 15N3O3Molecular Weight321.34CAS No151-54-MDL NoMFCD13151AppearanceDark green to almost black powderStorage TempStore a