This invention relates to a process for obtaining levofloxacin free from salts. In this process the starting product used is the compound (V) alkaline hydrolysis of which within a water-(C1-C4)alcohol mixture and subsequent neutralisation and separation of the salts leads to levofloxacin free from salts without need to carry out any final step of extraction and without using halogenated solvents.One characteristic of the process described is that no extractions are necessary in the final step of...

This invention relates to a process for obtaining levofloxacin free from salts.In this process the starting product used is the compound (V) alkaline hydrolysisof which within a water-(C1-C4)alcohol mixture and subsequent neutralisationand separation of the salts leads to levofloxacin free from salts. One characteristicof the process described is that no extractions are necessary in the final stepof the process.