1-(2,4-二甲基苯基)哌嗪

3-(1-哌嗪)苯甲酸甲酯

1-(3,4-dimethoxyphenyl)piperazine

1-(2,3-dihydro-1-benzofuran-5-yl)piperazine

4-(哌嗪-1-基)苯甲酸甲酯