吡啶并[3,4-b]吡嗪-2,3(1H,4H)-二酮

3-氨基-4-(叔丁氧羰基氨基)吡啶

4-(2-methylimidazo[4,5-c]pyridin-1-yl)benzonitrile

2-(2-硝基苯基)-3H-咪唑并[5,4-c]吡啶

2-(4-硝基苯基)-3H-咪唑并[5,4-c]吡啶