4,4'-二甲基-2,2'-联吡啶

2-氯异烟酸

4,4',6,6'-tetracarboxy-2,2'-bipyridine

4-ethyl-2-(4-ethylpyridin-2-yl)pyridine

2,2'-联吡啶-4,4'-二甲酸甲酯