摘要
目的建立测定匹多莫德有关物质的HPLC法。方法色谱柱为Welch Xtimate NH2柱(4.6 mm×250 mm,5μm),保护柱为Welch Ultimate LP-C18柱(4.6 mm×30 mm,5μm),流动相为10 mmol·L^-1磷酸二氢铵溶液(用体积分数10%磷酸调节pH值至3.0)(A)-乙腈(B),梯度洗脱,流速为1.0 mL·min^-1,柱温25℃,检测波长210 nm。结果匹多莫德质量浓度在1.51~18.1 mg·L^-1内与峰面积线性关系良好(r=0.999 8,n=6),最低检出量为3.0 ng;匹多莫德主成分与酸、碱、热、氧化、光照下的降解产物及主要降解产物之间均有良好的分离。结论本方法简便、灵敏、专属性强,适用于匹多莫德原料的质量控制。
Objective To develop an HPLC method for determination of the related substances of pidotimod. Methods A Welch Xtimate NH2 (4. 6 mm× 250 mm,5 μm)analytical column with a Welch Ultimate LP- C18(4. 6 mm× 30 mm,5 μm)guaranteed column was used for the determination, and the constitutes were separated out with gradient elution method, the mobile phase consisted of 10 mmol· L^-1 ammonium dihydro- gen phosphate solution(pH was adjusted to 3.0 by 10% phosphoric acid)( mobile phase A)and acetonitrile (mobile phase B ), and the flow rate was 1.0 mL·min^-1. The temperature of column was set at 25 ℃. UV detection was set at 210 nm. Results The calibration curve was linear in the range of 1.51- 18.1 mg·L^-1 ( r = 0. 999 8, n = 6 ). The limit of detection for the assay was 3.0 ng. Conclusions The method is simple, ac- curate and sensitive, and can be used to determine pidotimod and its related substances.
出处
《沈阳药科大学学报》
CAS
CSCD
北大核心
2014年第10期772-777,共6页
Journal of Shenyang Pharmaceutical University
作者简介
方克忠(1977-),男(汉族),山东诸城人,硕士研究生,E-maillunanjiayuan@163.com;
于治国(1958-),男(汉族),山东莱西人,教授,博士,博士生导师,主要从事中药复方药物代谢动力学及中药质量控制方法研究,Tel.024-23986295,E-mailyzg-cnn@163.com。