The present invention relates to a crystalline form of gatifoxacin (formula I) obtainable by process that comprises recrystallisation of the crude gatifloxacin in methanol and which is stable with a water content ranging between 2.5 and 4.5% by weight, to a process for preparing it and to the use thereof as an active substance in the preparation of pharmaceutical formulations.
本发明涉及一种晶体形式的
加替沙星(式I),该晶体形式可通过以下工艺获得:在
甲醇中重结晶粗
加替沙星,其稳定的
水含量范围为2.5至4.5重量%,以及制备该晶体形式的工艺和将其用作制备制药配方中的活性物质的用途。