发明人张德明,韩伟,钱学锋. "Method for the Synthesis of (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]Heptane-1-carboxamide" [P]. 中国发明专利, 专利号 CN 116715667 A, 授权公告日 2020-09-06.
发明人郑宇鹏,孙丽萍,罗永刚. "A Process for Preparing High-Purity (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]Heptane-1-carboxamide" [P]. 中国发明专利, 专利号 CN 113011765 B, 授权公告日 2019-11-14.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chromatographia, 2019, 175, (10), 4959-4973.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2017, 1185, 3726-3733.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of (1S,4R)-4,7,7-trimethyl-3-oxo-2-oxabicyclo[2.2.1]Heptane-1-carboxamide Using HRMS and NMR". J. Agric. Food Chem., 2012, 1927, (4), 3439-3467.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Rapid Commun. Mass Spectrom., 2016, 1548, 7855-7877.