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    • 7. 发明申请
    • CASCADE SYSTEM
    • CASCADE系统
    • US20080287675A1
    • 2008-11-20
    • US12120868
    • 2008-05-15
    • Yao-En Li
    • Yao-En Li
    • C07D498/12
    • C07D498/18
    • A method of purifying an active pharmaceutical ingredient sufficient for administration into a human subject can include: obtaining a reaction product composition having the active pharmaceutical ingredient and impurities, wherein said active pharmaceutical ingredient is rapamycin or a rapamycin analog; introducing the reaction product composition into a first column of a chromatography system; directing a first portion of a first elutant from the first column to waste, said first portion having more impurity than active pharmaceutical ingredient; directing a second portion of the first elutant from the first column into a second column, said second portion having more active pharmaceutical ingredient than impurity; collecting factions of a second elutant from the second column that include the active pharmaceutical ingredient; and concentrating the said collected fractions to obtain a purity of the active pharmaceutical ingredient greater than 98% and with less than or about 0.95% being first and second major impurities.
    • 纯化足以施用于人受试者的活性药物成分的方法可以包括:获得具有活性药物成分和杂质的反应产物组合物,其中所述活性药物成分是雷帕霉素或雷帕霉素类似物; 将反应产物组合物引入色谱系统的第一列; 将来自第一塔的第一洗脱液的第一部分引导至废物,所述第一部分具有比活性药物成分更多的杂质; 将所述第一洗脱液的第二部分从所述第一塔引导到第二塔中,所述第二部分具有比杂质更多的活性药物成分; 从第二列收集包含活性药物成分的第二洗脱液的派系; 并浓缩所述收集的级分以获得大于98%且小于或约0.95%的活性药物成分的纯度为第一和第二主要杂质。