Synonyms: Benzenamine,4,4'-[[4-(phenylimino)-2,5-cyclohexadien-1-ylidene]methylene]bis[N-phenyl-,monohydrochloride (9CI); Benzenamine,N-phenyl-4-[[4-(phenylamino)phenyl][4-(phenylimino)-2,5-cyclohexadien-1-ylidene]methyl]-,monohydrochloride; C.I. Solvent Blue 23 (7CI); C.I. Solvent Blue 23,monohydrochloride (8CI); C.I. 42760; Neptune Blue Base 652; Opal Blue SS;Solvent Blue 23