2-(3-methyl-1,2-oxazol-5-yl)-1-pyridin-2-ylethanone

六氢-2H-吡啶并[1,2-a]吡嗪-1(6H)-酮

2-吡啶甲醇

2-乙酰基吡啶

N-羟基-2-吡啶甲酰胺