1-ethyl-6-fluoro-7-morpholin-4-yl-4-oxo-1,8-naphthyridine-3-carboxylic acid

1-ethyl-6-fluoro-4-oxo-7-piperidin-1-yl-1,8-naphthyridine-3-carboxylic acid

1-ethyl-7-(4-ethylpiperazin-1-yl)-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid

7-(4-acetylpiperazin-1-yl)-1-ethyl-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid

1-乙基-6-氟-4-氧代-7-(3-氧代-1-哌嗪基)-1,4-二氢-1,8-萘啶-3-羧酸