【摘要】 建立核磁共振氢谱法测定10-O-(N,N-二甲氨基乙基)-银杏内酯B甲磺酸盐(XQ-1H)标准物质的含量。以齐多夫定为内标,DMSO-d6-D2O(5∶1)为溶剂,氢谱测定条件为:脉冲宽度30°,延迟时间20 s,采样次数32次,窗函数0.3 Hz。在此条件下,样品与内标的定量峰分离良好,线性范围宽,含量测定结果为99.12%,RSD为0.16%。该方法专属、准确,简便、快速,适用于对药物基准物质绝对含量的测定。更多还原

【Abstract】 A new method was established to determine the content of 10-O-(N,N-dimethylaminoethyl)-ginkgolide B methanesulfonate by 1H NMR using DMSO-d6-D2O(5 ∶1) as the solvent and zidovudine as the internal standard.Experimental parameters of NMR were extensively investigated.Under the optimal condition,the sample and internal standard showed good separation and linearity.The content of 10-O-(N,N-dimethylaminoethyl)-ginkgolide B methanesulfonate was 99.12% and its RSD was 0.16%.This method is specificity,accurate,simple and rapid,and is suitable for the quantitative determination of the content of the reference substance content.更多还原