4-乙酰基-1-甲基-2(1H)-吡啶酮

4-吡啶甲醛

4-(1,3-dioxolan-2-yl)pyridine

4-[1,3]dioxolan-2-yl-1-methyl-1H-pyridin-2-one

1-methyl-4-(2-methyl-[1,3]dioxolan-2-yl)-1H-pyridin-2-one