479-73-2 6035-94-5 Benzenamine, 4-((4-aminophenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl)-, monoacetate Bis(p-aminophenyl)-4-methylenecyclohexa-2,5-dienylideneammonium acetate EINECS 227-918-6