5-(1-甲基-2-吡咯烷基)-2-氨基吡啶

烟酸

3-(5-硝基-2H-吡唑-3-基)吡啶

Dihydrometanicotine

3-(1-hydroxy-1-methylpyrrolidin-1-ium-5-id-2-yl)pyridine