2-氯-5-(1-甲基乙烯基)-吡啶

1-[6-(4-甲基-1H-咪唑-1-基)-3-吡啶基]乙酮

1-(tetrazolo[1,5-a]pyridin-6-yl)ethanone

2-chloro-5-pyridin-2-ylpyridine