目的 选择合适的液相条件,建立加校正因子的主成分对照品外标法测定双氢青蒿素(DHA)中杂质DKA的方法。方法 采用C18色谱柱(4.6 mm×250 mm,5 μm);以乙腈-水(37∶63)为流动相,等度洗脱;流速为1 mL·min-1;检测波长为216 nm;柱温为15 ℃;进样体积为20 μL。结果 DHA α峰与其杂质DKA分离度良好,3根不同色谱柱测定出校正因子均值为0.256。结论 本方法测定DHA中杂质DKA准确、可靠,加校正因子的主成分对照品外标法可用于DHA原料药中DKA的质量控制。
Abstract
OBJECTIVE To establish a principal component reference substances external standard method with correction factor for the determination of impurity diketoal dehyde (DKA) in diketo aldehyde(DHA) bulk drug by selecting suitable liquid phase conditions. METHODS The chromatographic C18 column (4.6 mm×250 mm, 5 μm) was used; isometric elution was set at conducted using acetonitrile-water (37∶63) as elution condition; the flow rate was 1 mL·min-1; the detection wavelength was 216 nm; the column temperature was maintained at 15 ℃; the injection volume was 20 μL. RESULTS The DHA α peak and its impurity DKA were well separated. The average correction factor was 0.256 determined by three different chromatographic columns. CONCLUSION The correction factor of DKA in DHA is accurate and reliable. This method can be used for the quality control of DKA in DHA raw materials.
关键词
双氢青蒿素 /
diketo aldehyde /
校正因子
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Key words
dihydroartemisinin /
diketo aldehyde /
correction factor
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中图分类号:
R917
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参考文献
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脚注
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基金
国家重大新药创制科技重大专项课题资助(2017ZX09101002-002);中国中医科学院院自主选题资助(zz10-002)
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