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4-Benzoylpiperazine-1-carboxamidine

1-(4-Methoxyphenyl)-4-(4-nitrophenyl)piperazine

1-(3-Nitrophenyl)piperazine hydrochloride

(4-Nitrophenyl)piperazin-1-yl-methanone

1-(4-tert-Butylbenzyl)piperazine

1-(1-Pyrrolidinylcarbonylmethyl)piperazine hydrochloride

1-N-Heptylpiperazine

tert-Butyl-4-benzyl-1-piperazine carboxylate

(S)-2-Piperazine-tert-butylcarboxamide

1-Phenylpiperazine hydrochloride