A new HPLC-UV derivatization approach for the determination of potential genotoxic benzyl halides in drug substances
作者:Shunli Ji、Hongbin Gao、Xingya Xia、Feng Zheng
DOI:10.1039/c9ra03835c
日期:——
residual trace benzyl halides in drug substances. 1-(4-Nitrophenyl) piperazine (4-NPP) was selected as a new derivatization reagent because it shifted well the benzyl halides derivatives away to the near visible range (392 nm), which could minimize the matrix interferences from the drug substances and related impurities. Meanwhile, potassium iodide (KI) was used to convert the mixed benzyl halides into
卤化苄广泛用作药物合成中的烷基化试剂,是潜在的基因毒性杂质 (PGTI),需要将其控制在痕量水平。然而,现有的苄基卤分析方法往往存在基体干扰或苄基氯衍生化效率低等问题。在本文中,开发了一种简单的衍生化 HPLC-UV 方法,用于分析原料药中这些残留的痕量苄基卤化物。1-(4-硝基苯基)哌嗪 (4-NPP) 被选为新的衍生化试剂,因为它可以很好地将苄基卤化物衍生物转移到近可见光范围 (392 nm),这可以最大限度地减少来自原料药的基质干扰和相关杂质。同时,在衍生化之前,使用碘化钾 (KI) 将混合的苄基卤化物转化为苄基碘化物。衍生化参数还使用实验设计 (DoE) 进行了优化,以实现最佳反应效率。结果表明,新方法具有较高的特异性和敏感性,LOQ为7~9 μg·g-1相对于 5 mg mL -1安替比林和 17.5–22.5 μg g -1相对于 2 mg mL -1 oroxylin A。该