摘要:
目的 建立测定利塞膦酸钠片有关物质的高效液相色谱法。 方法 采用ODS C18色谱柱(5 μm,150 mm×4.6 mm),以缓冲液(取四丁基溴化铵3.22 g 加入1 000 ml 0.05 mol/L氯化铵缓冲液中,用氨水调pH至7.8±0.05)-甲醇-乙腈(250:50:25)为流动相;柱温:室温;流速:1.0 ml/min;检测波长:254 nm。 结果 在高温、酸、碱、氧化、强光降解下用HPLC测定,各杂质峰和主峰均有较好的分离效果,线性关系为Y=1.28×107X-1.62×105(r=0.999 9),线性良好,稳定性良好。 结论 该方法测定快速、简单、准确,灵敏度高,适用于利塞膦酸钠片有关物质的测定。
Abstract:
Objective To establish a HPLC method for determination of related substances of risedronate sodium tablets. Methods The C18 column,5 μm,150 mm×4.6 mm,the buffer solution (3.22 g tetrabutyl ammonium bromide was added to a buffer solution of 1 000 ml 0.05 mol/L ammonium chloride,then adjusted pH to 7.8±0.05 by ammonia)-methanol-acetonitrile =250:50:25 as mobile phase,column temperature:room temperature,flow rate:1.0 ml/min,detection length:254 nm. Results Determined by HPLC at high temperature,acid,alkali degradation,the main peak and the impurity peaks were separated well,and the peaks had a linear relationship,Y=1.28×107X-1.62×105 (r=0.999 9). Conclusion The method was rapid,simple,accurate and sensitive,and suitable for determination of risedronate sodium tablets related substances.