25561-56-2 4'-Chloro-2-((4-methyl-1-piperazinyl)imino)acetophenone hydrochloride 4'-Chloro-2-((N'-methyl-N-piperazino)imino)acetophenone hydrochloride ACETOPHENONE, 4'-CHLORO-2-((4-METHYL-1-PIPERAZINYL)IMINO)-, HYDROCHLORIDE