ethyl 5-chloro-4-oxo-1H-1,6-naphthyridine-3-carboxylate

diethyl 2-[(isoquinolin-5-ylamino)methylidene]propanedioate

ethyl 1-ethyl-4-oxo-1,8-phenanthroline-3-carboxylate

4-氧代-1,4-二氢-1,10-菲咯啉-3-羧酸乙酯

4-溴-6-甲氧基喹啉-3-羧酸乙酯