6-Chloro-2,3,4,5-tetrahydro-1H-pyrido[4,3-b]indole

1-(2-氟-4-硝基苯基)哌啶-4-酮

1-(环丙基甲基)哌啶-4-酮

1',2',3',6'-四氢-[2,4']联吡啶

N-丁基-4-氨基哌啶