Identification and genotoxicity evaluation of two carbamate impurities in rasagiline
作者:Yongqiang Sun、Xinyu Zhang、Yimin Yan、Yongrui Tu、Xiaohui Feng、Wei Jiang、Feng Zheng
DOI:10.1039/c6ra20810j
日期:——
class of potentially genotoxic impurities (GTIs), the genotoxicity of these two impurities was evaluated by the malformation test and the comet assay using zebrafish embryos. The results showed that the genotoxicity of impurity B was significant higher than that of rasagiline and other impurities. Thus, a HPLC-MS method was developed and validated for the determination of impurity B in rasagiline. The
在合成第二代单胺氧化酶-B抑制剂雷沙吉兰的过程中,检测到两种未知杂质(杂质A和杂质B),并通过制备型液相色谱法进行了分离。基于质谱和NMR,这两种杂质被表征为具有氨基甲酸炔丙酯结构的副产物,其产生与碱性反应溶液中的二氧化碳有关。由于氨基甲酸酯结构已被突出显示为一类潜在的遗传毒性杂质(GTI),因此通过畸形试验和使用斑马鱼胚胎的彗星试验评估了这两种杂质的遗传毒性。结果表明,杂质B的遗传毒性显着高于雷沙吉兰和其他杂质。因此,建立了HPLC-MS方法并验证了雷沙吉兰中杂质B的测定。建立的方法显示出良好的特异性,线性,精密度和准确性。该方法的检出限为2.0 ppm(0.1 mg ml)-1雷沙吉兰甲磺酸盐。