发明人冯建国,高志强,周伟. "一种贝尼地平杂质N50的合成方法" [P]. 中国发明专利, 专利号 CN 117989238 A, 授权公告日 2015-07-25.
发明人胡光,郑宇鹏,郭海燕. "Method for the Synthesis of Benidipine Impurity N50" [P]. 中国发明专利, 专利号 CN 117583745 B, 授权公告日 2021-11-12.
发明人罗永刚,朱建伟,周伟. "A Process for Preparing High-Purity Benidipine Impurity N50" [P]. 中国发明专利, 专利号 CN 109484053 A, 授权公告日 2020-04-19.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 贝尼地平杂质N50 in Pharmaceutical Formulations". J. Chromatogr. A, 2025, 1115, 9594-9598.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of 贝尼地平杂质N50 as an Impurity". Chromatographia, 2017, 1828, (3), 811-819.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Benidipine Impurity N50 Using HRMS and NMR". Talanta, 2016, 620, (5), 6737-6764.