1-[(4-Methylphenyl)sulfonyl]piperazine27106-51-0 1-[2-(1-Pyrrolidinyl)ethyl]piperazine22763-69-5 1-[2-(2-Hydroxyethoxy)ethyl]piperazine13349-82-1 1-[2-(Dimethylamino)ethyl]piperazine3644-18-6 1-[2-(Trifluoromethyl)phenyl]piperazine63854-31-9 1-[2-Chloro-5-(trifluoromethyl)phenyl]hydrazine1869-22-3 1-[2(2-Hydroxyethoxy)ethyl]piperazine dihydrochloride85293-16-9 1-[3-(Trifluoromethyl)-2-pyridinyl]piperazine87394-63-6 1-[3-(Trifluoromethyl)phenyl]piperazine15532-75-9 1-[3-Chloro-5-(trifluoromethyl)-2-pyridinyl]piperazine132834-59-4 1-[4-(Trifluoromethyl)phenyl]piperazine30459-17-7 1-[4-Chloro-3-(trifluoromethyl)phenyl]piperazine41213-04-1 1-[8-(2-Chlorophenyl)-9-(4-chlorophenyl)-9H-purin-6-yl]-4-(ethylamino)-4-piperidinecarboxamide686344-29-6 1-[Bis(4-fluorophenyl)methyl]piperazine27469-60-9 1-Acetylpiperazine13889-98-0 1-Allylpiperazine13961-36-9 1-Amino-4-(ethylamino)-9,10-dihydro-9,10-dioxo-2-anthracenecarbonitrile62570-50-7 1-Anilino-3-phenylimino-1-propene hydrochloride50328-50-2 1-Benzenesulfonyl-piperazine14172-55-5 1-Benzoylpiperazine13754-38-6