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Pyridinylpiperazine34803-66-2100 % similar 1-(2-Pyridyl)piperazine monohydrochloride129394-11-289 % similar Pyrimidinylpiperazine20980-22-757 % similar 1-Piperazinylpyrazine34803-68-456 % similar 1-(4-Methyl-2-pyridinyl)piperazine34803-67-354 % similar 1-Pyridin-2-ylmethyl-piperazine55579-01-653 % similar 6-Piperazinonicotinonitrile149554-29-053 % similar 2-(1-Piperazinyl)pyrimidine dihydrochloride94021-22-452 % similar 1-(2-Pyridin-2-yl-ethyl)-piperazine53345-15-651 % similar 2-Piperazinonicotinonitrile84951-44-051 % similar Quipazine4774-24-750 % similar Phenylpiperazine92-54-650 % similar 1-(5-Trifluoromethyl-pyridin-2-yl)-piperazine132834-58-347 % similar 1-(4-Pyridyl)piperazine1008-91-947 % similar 1-[3-(Trifluoromethyl)-2-pyridinyl]piperazine87394-63-646 % similar 1-Phenylpiperazine hydrochloride2210-93-745 % similar 2-Dimethylaminopyridine5683-33-045 % similar 1-(2-Bromophenyl)piperazine1011-13-844 % similar 1-Biphenyl-4-yl-piperazine180698-19-544 % similar 4-(5-Nitropyridin-2-yl)piperazine82205-58-144 % similar