英文别名1-Cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxo-quinolin-3-carboxylic acid methyl ester; methyl 1-cyclopropyl-6,7-difluoro-4-oxoquinoline-3-carboxylate; 3-Quinolinecarboxylic acid, 1-cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxo-, methyl ester; Methyl 1-cyclopropyl-6,7-difluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylate; Ciprofloxacin Impurity 40; Ciprofloxacin Impurity 44 
