Ethyl 6-fluoro-4-oxo-1,4-dihydro-3-quinolinecarboxylate

7-甲氧基-4-氧代-1,4-二氢喹啉-3-羧酸乙酯

4-溴-6-甲氧基-1,5-萘啶-3-羧酸乙酯

4-羟基-7-硝基喹啉-3-羧酸乙酯

diethyl 2-(diethoxymethyl)propanedioate