2,2'-联吡啶-6,6'-二羧酸

2-(丙基氨基)吡啶

N-pyridin-2-ylbenzamide

ethyl 2-pyridin-2-yl-1,3-oxazole-4-carboxylate

(3S)-3-甲基-1-(2-吡啶基)哌嗪