摘要目的:采用HPLC法测定盐酸头孢他美酯原料药及其片剂的含量。 方法:以Nova-PakC18为色谱柱,乙腈-甲醇-水-磷酸盐缓冲液(360∶95∶500∶45)为流动相,检测波长为263nm。 结果:线性关系r=0.9999,平均回收率为99.94%,RSD=0.44%(n=5)。 结论:方法简便、准确,适用于该产品的质量检验分析。
HPLC
Determination of Cefetamet Pivoxil Hydrochloride
and Its Tablets Wang Jian
(Zhejiang Institute for Drug Control,Hangzhou 310004) AbstractObjective:Cefetamet
pivoxil hydrochloride and its tablets were determined by a new HPLC
method. Method:The separation was performed on
a Nova-Pak C18 column.The mobile phase was composed
of acetonitrile-methanol-water-phosphate buffer(360∶95∶500∶45).The UV detector was set at
263 nm. Results:The average recovery was 99.94%(RSD=0.44%,n=5),with
good linear relationship (r=0.9999). Conclusion:The method was simple and accurate
and can be used for the quality control of cefetamet pivoxil hydrochloride
and its tablets. Key words cefetamet pivoxil hydrochloride,HPLC,cefetamet pivoxil
hydrochloride tablets 盐酸头孢他美酯是新型头孢类抗生素,收载于《日本抗生物质医药品基准解说》1993年版[1],试剂需进口,本文改进了盐酸头孢他美酯及片剂HPLC测定的色谱条件,结果满意。 1 仪器、试药 1.1 仪器
日本岛津LC-6A高效液相色谱仪,SPD-6AV检测器,C-R4A色谱数据处理仪。 1.2 试药
盐酸头孢他美酯对照品,上海药品质量标准研究所标化,含量为71.6%(按头孢他美计);盐酸头孢他美酯原料、片剂,由浙江康裕制药有限公司提供;甲醇、乙腈为色谱纯试剂。 2 色谱条件
色谱柱:大连化物所Nova-Pak C18柱(4.6mm×200mm,4μm);流动相:乙腈-甲醇-水-磷酸盐缓冲液(取无水磷酸氢二钠5.8g与磷酸二氢钾3.5g,加水溶解并稀释成1000mL)(360∶95∶500∶45);流速:1.0mL.min-1;检测波长:263nm;进样量:20μL。在本色谱条件下得到的主药与杂质色谱图见图1-A、B,按盐酸头孢他美酯峰计算理论板数为5500。 |