1-(2-氯乙基)-2-甲基哌啶

6-methyl-1-oxido-2,3,4,5-tetrahydropyridin-1-ium

2-methyl-1-oxido-2,3,4,5-tetrahydropyridin-1-ium

2-甲基-1-(3-苯氧基丙基)哌啶

苯基乙酸 3-(2-甲基哌啶基)丙基酯