申请人:TAIHO PHARMACEUTICAL COMPANY LIMITED
公开号:EP1295870A1
公开(公告)日:2003-03-26
Provided are a suplatast tosilate crystal showing characteristic peaks in powder X-ray diffraction at diffraction angles (2θ ± 0.1°) of 5.6°, 9.0°, 11.0°, 15.3°, 16.5°, 17.2°, 17.9°, 19.2°, 19.9° and 21.5°; and a preparation process of the crystal.
Owing to merits such as a fluctuation-free optically active substance ratio, low hygroscopicity and high storage stability, the suplatast tosilate crystal of the present invention can be mass produced easily and at the same time, is advantageous in drug preparation or quality management. It is thus excellent as a raw material for pharmaceuticals.
本发明提供了一种在粉末 X 射线衍射中显示 5.6°、9.0°、11.0°、15.3°、16.5°、 17.2°、17.9°、19.2°、19.9° 和 21.5°衍射角(2θ ± 0.1°)特征峰的托西拉斯特晶体,以及该晶体的制备工艺。
由于具有光学活性物质比率无波动、吸湿性低和贮存稳定性高等优点,本发明的对羟基苯磺酸超拉塔司特晶体易于大规模生产,同时在药物制备或质量管理方面具有优势。因此,它是一种很好的药物原料。