2-(吡啶-4-基氨基)苯甲酸

1,2-dihydropyrazolo[4,3-c]pyridin-3-one

4-(吡啶-4-基氧基)哌啶-1-羧酸叔丁酯

4-二甲氨基吡啶

2-piperidin-4-yloxypyridine