1-甲基-4-苯基-4-羟基哌啶

2,3,4,5-四氢-2,8-二甲基-5-[2-(6-甲基吡啶-3-基)乙基]-1H-吡啶并[4,3-b]吲哚

1-methyl-3,5-bis(pyridin-4-ylmethylidene)piperidin-4-one

3,7-dimethyl-3,7-diazabicyclo[3.3.1]nonane

4-氨基-1-甲基哌啶