发明人韩伟,罗永刚,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110456933 A, 授权公告日 2019-03-10.
发明人李文辉,孙丽萍,林芳. "Method for the Synthesis of Diethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-2,3-dicarboxylate" [P]. 中国发明专利, 专利号 CN 112825795 A, 授权公告日 2023-04-26.
发明人马晓峰,李文辉,郑宇鹏. "A Process for Preparing High-Purity Diethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-2,3-dicarboxylate" [P]. 中国发明专利, 专利号 CN 113549166 A, 授权公告日 2020-05-03.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2010, 1117, (7), 4605-4635.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2012, 2125, 517-525.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Diethyl 1-benzyl-5,5-difluoro-4-oxopiperidine-2,3-dicarboxylate Using HRMS and NMR". J. Chromatogr. A, 2022, 168, (6), 9965-9993.