20326-12-9 20344-15-4 H 4007 Mepiprazole dihydrochloride Mepiprazole hydrochloride Piperazine, 1-(3-chlorophenyl)-4-(2-(5-methyl-1H-pyrazol-3-yl)ethyl)-, dihydrochloride Piperazine, 1-(m-chlorophenyl)-4-(2-(5-methylpyrazol-3-yl)ethyl)-, dihydrochloride Quiadon