发明名称 Method for the Preparation of Crystal Forms of Torsemide in a Pure State
摘要 A method for the preparation of crystal form 1 of polymorphous crystalline torsemide, wherein torsemide is dissolved in an ethanol-water mixture with heating, after which the torsemide is subsequently cooled and dried once crystal separation has been performed. Drying takes place in a blade drier, for example, with the crystals being subjected to mechanical stress, wherein the crystals of crystalline form 2 are transformed into crystalline form 1.
申请公布号 US2007260068(A1) 申请公布日期 2007.11.08
申请号 US20050658514 申请日期 2005.07.28
申请人 WELZIG STEFAN;GERDENITSCH ANTON;KUHNHACKL PETER 发明人 WELZIG STEFAN;GERDENITSCH ANTON;KUHNHACKL PETER
分类号 C07D213/71 主分类号 C07D213/71
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