3-氨基吡啶-2-羧酸

6-苄基-5H-吡咯并[3,4-b]吡啶-5,7(6H)-二酮

3-氰基吡啶-2-羧胺

6-phenylpyrrolo[3,4-b]pyridine-5,7-dione

2-methylpyrrolo[3,4-c]pyridine-1,3-dione