发明人林芳,李文辉,马晓峰. "Method for the Synthesis of Fesoterodine Impurity A" [P]. 中国发明专利, 专利号 CN 113534878 B, 授权公告日 2019-12-14.
发明人王建平,冯建国,刘建华. "A Process for Preparing High-Purity Fesoterodine Impurity A" [P]. 中国发明专利, 专利号 CN 116138012 B, 授权公告日 2015-02-25.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2015, 254, 359-382.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Sci. Total Environ., 2013, 1075, (5), 4124-4144.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of Fesoterodine Impurity A Using HRMS and NMR". Anal. Methods, 2016, 839, 1873-1900.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2017, 274, (10), 269-299.