3-丙基吡啶

(2-氧代-2-吡啶-3-基-乙基)-氨基甲酸叔丁酯

1-hydroxy-4-pyridin-3-ylbutan-2-one

N,N-diethylpyridine-3-sulfonamide

4-(3-吡啶基)-2-氯嘧啶