4-己酰基吡啶

(2-pyridin-4-yl-1,3-dioxolan-2-yl)methyl formate

反-3-(4-吡啶基)烯丙酸

4-氰基吡啶

4-(3-乙氧基-3-氧代丙基)哌啶-1-羧酸叔丁酯