1-(3,4-二氯苄基)哌嗪

4-甲氧基-2-(1-哌嗪基)嘧啶

1-(4-硝基-2-三氟甲基苯基)-哌嗪

1-(4-氯苯基)哌嗪

1,4-bis(4-chlorophenyl)piperazine