1-[4-(6-chloro-3-nitropyridin-2-yl)piperazin-1-yl]ethanone

1-[4-(6-amino-3-nitropyridin-2-yl)piperazin-1-yl]ethanone

1-[4-[5-(2-aminothiazol-5-yl)sulfanyl-2-methoxy-4-methyl-benzoyl] piperazin-1-yl]ethanone

2-(4-乙酰基哌嗪)-5-溴吡啶