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中国药物评价 ›› 2020, Vol. 37 ›› Issue (1): 31-35.

• 评价技术与方法 • 上一篇    下一篇

盐酸二甲双胍肠溶胶囊中二甲胺残留量的测定

甘加明,李永平, 黄诺哲,黄莹, 严全鸿   

  1. 广东省药品检验所
  • 收稿日期:2019-12-18 修回日期:2020-01-13 出版日期:2020-02-28 发布日期:2020-03-30

Determination of Residual Dimethylamine in Metformin Hydrochloride Enteric-coated Capsules

  • Received:2019-12-18 Revised:2020-01-13 Online:2020-02-28 Published:2020-03-30

摘要: 目的:建立盐酸二甲双胍肠溶胶囊中二甲胺残留量的柱前衍生HPLC测定方法。方法:用十八烷基硅烷键合硅胶为填充剂,以1.0%甲酸溶液-乙腈为流动相,采用梯度洗脱程序,检测波长为265 nm。结果:在选定的色谱条件下,二甲胺在0.254~4.065 μg·mL-1的浓度范围内线性关系良好(r>0.999);精密度试验的RSD为1.6%,稳定性试验的RSD为1.5%;回收率为100.3%(n=9,RSD<1.5%)。二甲胺的检测限为0.050 8 μg·mL-1,在测定的3批样品中,3批均检出二甲胺分别为0.01%,0.04%,0.02%。结论:本方法专属性强,准确度高,重现性好,能控制盐酸二甲双胍肠溶胶囊中二甲胺残留量。

关键词: 高效液相色谱法, 盐酸二甲双胍, 二甲胺, 柱前衍生

Abstract: Objective:To establish pre-column derivatization and HPLC method for the determination of dimethylamine in Metforminhydrochloride enteric-coated capsules.Methods:With octadecylsilane chemically bonded silica as filler, With 1.0% formic acid solution (A) and acetonitrile (B) as mobile phase, ingradientelution,and the detectionwavelength was 265 nm. Results: In the spectrum of the selectedconditions,A good linearity observed in the range of 0.254~4.065 μg·mL-1 (r>0.999)dimethylamine. The RSD of the precision was 1.6%,The RSD of stability test was 1.5%;The recovery was 100.3%(n=9,RSD<1.5%). The limit of detection was 0.050 8 μg·mL-1.The test results of 3 batches of samples was 0.01%,0.04%,0.02%. Conclusion: The method is specific, accurate and reproducible for the determination of dimethylamine in metformin hydrochloride enterin-coated capsules.

Key words: HPLC, Metformin hydrochloride, Dimethylamine, Pre-column derivation

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