The molecule is an imine that is 4-methylidenecyclohexa-2,5-dien-1-imine in which both the hydrogens of the methylidene group are replaced by 4-amino-3-methylphenyl groups. The hydrochloride salt is the histological dye 'magenta II'. It has a role as a histological dye and a fluorochrome. It is an imine and a substituted aniline. It is a conjugate base of a magenta II(1+).
4-[(E)-(4-aminophenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline