申请人:Mezei Tibor
公开号:US20090209617A1
公开(公告)日:2009-08-20
The subject of the present invention is the provision of new salts of duloxetine of the Formula (I) with organic acids, process for their preparation and medicinal products containing thereof. The new salts are essentially free from the impurity of the Formula (II) and possess high purity and high stability. The new duloxetine salts are prepared by reacting duloxetine free base dissolved in an organic solvent with an approximately equimolar amount of an organic acid. Particularly advantageous crystalline salts are those formed with fumaric acid, citric acid or (−)-mandelic acid.
本发明的主题是提供公式(I)的新的杜氯西泮盐与有机酸的组合、它们的制备过程以及含有它们的药物产品。这些新的盐基本上不含公式(II)的杂质,具有高纯度和高稳定性。这些新的杜氯西泮盐是通过将杜氯西泮游离基溶解在有机溶剂中,与大约等量的有机酸反应制备而成的。特别有优势的结晶盐是与富马酸、柠檬酸或(-)-苯乙酸形成的盐。