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1-Benzenesulfonyl-piperazine14172-55-530 % similar 1-(4-(Trifluoromethyl)phenyl)piperazine30459-17-730 % similar 1-(4-Methoxyphenyl)piperazine38212-30-530 % similar 1-(4-Bromophenyl)piperazine monohydrochloride68104-62-130 % similar 1-(10,11-Dihydro-5H-dibenzo[a,d]cyclohepten-5-yl)piperazine69159-50-830 % similar 1-(1-Phenylethyl)piperazine69628-75-730 % similar 1-(3,5-Dichlorophenyl)piperazine55827-50-430 % similar