1-Ethyl-6-fluoro-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic acid, monomethanesulfonate 1589 mR.B. 3-Carboxy-1-ethyl-6-fluoro-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxoquinoline monomethanesulphonate 3-Quinolinecarboxylic acid, 1-ethyl-6-fluoro-1,4-dihydro-7-(4-methyl-1-piperazinyl)-4-oxo-, monomethanesulfonate 41 982 RP 70458-92-3 70458-95-6 EINECS 274-613-9 Pefloxacin mesylate Pefloxacin mesylate [USAN] Pefloxacin methanesulfonate