6-[3-({2-[(2-carboxyethyl)oxy]ethyl}oxy)propyl]-1-ethyl-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid

1-ethyl-6-iodo-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester

({[2-(2-propyn-1-yloxy)ethyl]oxy}methyl)benzene

1-ethyl-4-oxo-6-[3-({2-[(phenylmethyl)oxy]ethyl}oxy)-1-propyn-1-yl]-1,4-dihydro-3-quinolinecarboxylic acid

1-ethyl-6-iodo-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid

ethyl 3-(dimethylamino)-2-[(2-fluoro-5-iodophenyl)carbonyl]-2-propenoate

1-ethyl-6-{3-[(2-hydroxyethyl)oxy]propyl}-4-oxo-1,4-dihydro-3-quinolinecarboxylic acid