Nowak P, Nielsen H, Johansson L. "一种的合成方法" [P]. European Patent, EP 3498691 A1, 2017-06-23.
发明人郑宇鹏,王建平,刘建华. "Method for the Synthesis of Penehyclidine Impurity 1" [P]. 中国发明专利, 专利号 CN 115320751 B, 授权公告日 2021-08-14.
发明人郑宇鹏,胡光,杨光. "A Process for Preparing High-Purity Penehyclidine Impurity 1" [P]. 中国发明专利, 专利号 CN 113857409 A, 授权公告日 2024-06-04.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Food Chem., 2021, 2376, (12), 292-305.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2021, 1311, (7), 7560-7577.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of Penehyclidine Impurity 1 Using HRMS and NMR". Anal. Chim. Acta, 2019, 1434, (5), 3331-3350.
Zhou X P, Huang L, Wu G. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Pharm. Biomed. Anal., 2020, 1491, 4717-4746.