Chemical Name: (3S,10R,13S,E)-17-hydrazineylidene-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol
Synonym: Clozapine impurity B (USP) ; (2-((2-amino-4-chlorophenyl)amino)phenyl)(4-methylpiperazin-1-yl)methanone