127294-64-8 3-Quinolinecarboxylic acid, 1,4-dihydro-7-(3-amino-1-piperidinyl)-1-cyclopropyl-6-fluoro-8-methoxy-4-oxo- 3-Quinolinecarboxylic acid, 7-(3-amino-1-piperidinyl)-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-4-oxo- 7-(3-Amino-1-piperidinyl)-1-cyclopropyl-6-fluoro-1,4-dihydro-8-methoxy-4-oxo-3-quinolinecarboxylic acid