发明人王建平,赵玉洁,钱学锋. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108490596 A, 授权公告日 2023-08-24.
发明人罗永刚,刘建华,郑宇鹏. "Method for the Synthesis of tert-Butyl 4-benzyl-3-oxo-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 111027388 B, 授权公告日 2023-08-26.
发明人赵玉洁,马晓峰,杨光. "A Process for Preparing High-Purity tert-Butyl 4-benzyl-3-oxo-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate" [P]. 中国发明专利, 专利号 CN 110206338 B, 授权公告日 2017-01-27.
参考文献 Literature
Brown R C, Davis S M. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2011, 88, (3), 2399-2421.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2020, 2423, 3492-3507.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of tert-Butyl 4-benzyl-3-oxo-1-oxa-4,9-diazaspiro[5.5]undecane-9-carboxylate Using HRMS and NMR". Anal. Methods, 2013, 2157, 6606-6613.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2017, 1466, 4457-4478.