Risedronate sodium having a very low content of iron
    9.
    发明授权
    Risedronate sodium having a very low content of iron 失效
    利塞膦酸钠具有非常低的铁含量

    公开(公告)号:US07358360B2

    公开(公告)日:2008-04-15

    申请号:US10759919

    申请日:2004-01-16

    IPC分类号: C07F9/28

    CPC分类号: C07F9/59

    摘要: The present invention relates to a method of making risedronate sodium substantially free of iron including the steps of refluxing, especially with mechanical agitation, a combination of risedronic acid, a sodium base, especially sodium hydroxide, and an iron-reducing amount of EDTA in a liquid that is water, a lower alkanol, or, especially, a mixture of a lower alkanol and water; and isolating risedronate sodium substantially free of iron from the combination.

    摘要翻译: 本发明涉及一种制备基本上不含铁的利塞膦酸钠的方法,包括以下步骤:特别是机械搅拌下,将利塞膦酸,钠碱,特别是氢氧化钠和减铁量的EDTA的组合在 液体是水,低级链烷醇,或特别是低级链烷醇和水的混合物; 并从该组合中分离出基本上不含铁的利塞膦酸钠。