n-甲基-n-2-吡啶乙酰胺

N-(4-oxopyrano[2,3-b]pyridin-2-yl)acetamide

3-戊基乙酸酯

N-(5-nitropyridin-3-yl)sulfonylacetamide

3-(2-oxopyrrolidin-1-yl)propyl acetate