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1-Methyl-4-(4-nitrophenyl)piperazine

2-(4-Methylphenyl)piperazine

4-(4-Nitrophenyl)piperazine-1-carboxylic acid tert-butyl ester

2-Thiophen-2-yl-piperazine

1-Pyridin-2-ylmethylpiperidine-4-carboxylic acid ethyl ester

1-Pyridin-4-ylmethylpiperidine-4-carboxylic acid ethyl ester

1-Pyrimidin-2-yl-piperidin-4-one

1-Pyrimidin-2-yl-piperidine-4-carboxylic acid ethyl ester

1-(4-Trifluoromethylphenyl)piperidine-4-carboxylic acid ethyl ester

1-(4-Trifluoromethylphenyl)piperidine-4-carboxylic acid

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