2-羟基-1-(1-哌啶基)乙酮

1-[(4-碘苯基)磺酰基]-4-甲基哌嗪

1’-氧代培拉嗪

4,4-dimethylpiperazin-4-ium-1-carbaldehyde,iodide

3-(4-methylpiperazin-1-yl)benzene-1,2-dicarbonitrile