发明人杨光,郑宇鹏,罗永刚. "一种N/A的合成方法" [P]. 中国发明专利, 专利号 CN 117080959 A, 授权公告日 2022-01-17.
发明人李文辉,唐晓军,朱建伟. "Method for the Synthesis of Triphenylsulfonium (7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonate" [P]. 中国发明专利, 专利号 CN 115181615 A, 授权公告日 2024-10-15.
Mueller T C, Schröder R, Lefèvre J P. "A Process for Preparing High-Purity Triphenylsulfonium (7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonate" [P]. European Patent, EP 3982095 A1, 2018-12-10.
参考文献 Literature
Fischer P, Wagner E. "Development and Validation of an LC-MS/MS Method for the Determination of N/A in Pharmaceutical Formulations". Anal. Chim. Acta, 2017, 771, (7), 1357-1365.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of N/A as an Impurity". Sci. Total Environ., 2022, 1758, (2), 46-60.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of Triphenylsulfonium (7,7-dimethyl-2-oxobicyclo[2.2.1]heptan-1-yl)methanesulfonate Using HRMS and NMR". Environ. Sci. Technol., 2022, 1699, 8123-8148.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate N/A Profile in Drug Substances According to ICH Guidelines". Food Chem., 2014, 1244, (6), 7253-7258.