ANHYDROUS CRYSTALS
    1.
    发明公开
    ANHYDROUS CRYSTALS 失效
    WASSERFREIE KRISTALLE

    公开(公告)号:EP0819676A4

    公开(公告)日:1998-07-08

    申请号:EP96904290

    申请日:1996-03-01

    CPC分类号: C07D207/27

    摘要: Substantially nonhygroscopic anhydrous crystals of compounds represented by the general formula: R2-CH2CONH-R1 (wherein R1 represents (un)substituted pyridyl or (un)substituted phenyl; and R2 represents (un)substituted 2-oxo-1-pyrrolidinyl). Drying the hydrous crystals of the above compounds at a temperature of 80 °C or above under reduced pressure yields the corresponding anhydrous crystals with a weight gain of at most 1 % caused by moisture absorption after storage at a relative humidity of 83 % and a temperature of 25 °C for 30 days. Medicines containing the above compounds in the form of anhydrous crystals are uniform in the active ingredient content.

    摘要翻译: 由通式R 2 -CH 2 CONH-R 1(其中R 1代表(未)取代的吡啶基或(未)取代的苯基;和R 2代表(未)取代的2-氧代-1-吡咯烷基)代表的化合物的基本上无吸湿性的无水晶体。 上述化合物的含水结晶在80℃以上的减压下干燥,得到相对湿度83%,温度保存后的吸湿引起的重量增加为1%以下的无水结晶 25℃30天。 含有无水晶体形式的上述化合物的药物在活性成分含量上是均匀的。