发明人高志强,冯建国,陈志强. "Method for the Synthesis of (5R)-4-tert-butoxycarbonyl-1,4-oxazepane-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113968271 A, 授权公告日 2024-03-24.
发明人王建平,沈红梅,刘建华. "A Process for Preparing High-Purity (5R)-4-tert-butoxycarbonyl-1,4-oxazepane-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116632794 A, 授权公告日 2023-11-16.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2017, 1383, 1025-1032.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2010, 905, (9), 1504-1513.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of (5R)-4-tert-butoxycarbonyl-1,4-oxazepane-5-carboxylic acid Using HRMS and NMR". Chemosphere, 2014, 454, (1), 2468-2488.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2011, 1362, (4), 4607-4625.