Trifluoromethyl analogs of X-ray contrast media for magnetic resonance
imaging
    2.
    发明授权
    Trifluoromethyl analogs of X-ray contrast media for magnetic resonance imaging 失效
    用于磁共振成像的X射线造影剂的三氟甲基类似物

    公开(公告)号:US5385724A

    公开(公告)日:1995-01-31

    申请号:US206353

    申请日:1994-03-04

    IPC分类号: A61K49/06 A61B5/055

    CPC分类号: A61K49/06 Y10T436/24

    摘要: Methods and compositions are disclosed for enhancing .sup.19 F magnetic resonance imaging which utilize trifluoromethyl derivatives of iodinated X-ray contrast media. Typical magnetic resonance contrast media within the scope of the present invention include bis(trifluoromethyl)benzene derivatives, tris(trifluoromethyl)benzene derivatives, tetrakis(trifluoromethyl)benzene derivatives, and other related trifluoromethylated benzene derivatives.

    摘要翻译: 公开了用于增强使用碘化X射线造影剂的三氟甲基衍生物的19F磁共振成像的方法和组合物。 在本发明范围内的典型磁共振造影剂包括双(三氟甲基)苯衍生物,三(三氟甲基)苯衍生物,四(三氟甲基)苯衍生物和其它相关的三氟甲基化苯衍生物。

    Reversed phase chromatographic process
    3.
    发明授权
    Reversed phase chromatographic process 失效
    反相色谱法

    公开(公告)号:US5204005A

    公开(公告)日:1993-04-20

    申请号:US646836

    申请日:1991-01-28

    摘要: An improved process for the reversed phase chromatographic decolorization, separation, and purification of water-soluble, nonionic contrast media compounds from solutions containing nonionic compound impurities involves the steps of (a) packing a chromatographic column with a chromatographic packing material; (b) passing through the column a solution containing a water-soluble, nonionic contrast media compound and nonionic compounds as impurities at a loading ratio between approximately 10 to 1 and 1.5 to 1 wt. packing material/total wt. nonionic compounds; and (c) eluting the column to produce an eluate containing substantially pure, water-soluble, nonionic contrast media compound or MRI agent. The process can be economically practiced on a factory scale and efficiently removes non-polar impurities difficult to remove by conventional methods.

    摘要翻译: 从含有非离子化合物杂质的溶液中对水溶性非离子造影剂化合物进行反相色谱脱色,分离和纯化的改进方法包括以下步骤:(a)用色谱填充材料包装色谱柱; (b)以约10-1和1.5-1重量%之间的负载比,将含有水溶性非离子造影剂化合物和非离子化合物作为杂质的溶液通过柱子。 包装材料/总重量 非离子化合物; 和(c)洗脱柱以产生含有基本上纯的水溶性非离子造影剂化合物或MRI剂的洗脱液。 该方法可以在工厂规模上经济实践,并有效地除去常规方法难以除去的非极性杂质。