1-(5-氨基-2-甲氧基苯基)-4-甲基哌嗪

2-[methyl(2-sulfanylethyl)amino]ethanethiol

4-氰基-4-(4-氟苯基)哌啶-1-羧酸叔丁酯

4-(4-氟苯基)-1-甲基哌啶-4-甲腈

哌嗪