Sørensen M, Nowak P, Jørgensen K. "一种的合成方法" [P]. European Patent, EP 3566998 A1, 2022-12-27.
Lefèvre J P, Johansson L, Rossi M. "Method for the Synthesis of Carbocisteine Impurity 20" [P]. European Patent, EP 3140289 A1, 2023-05-17.
发明人杨光,朱建伟,孙丽萍. "A Process for Preparing High-Purity Carbocisteine Impurity 20" [P]. 中国发明专利, 专利号 CN 113946819 A, 授权公告日 2020-01-24.
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". J. Sep. Sci., 2025, 1337, (1), 2254-2257.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2011, 1217, (2), 7307-7320.
Wang L, Li J, Zhang H. "Identification and Structural Characterization of a Novel Degradation Product of Carbocisteine Impurity 20 Using HRMS and NMR". Chromatographia, 2019, 1448, (4), 4406-4417.
Martinez C, Lopez D R. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Phytochemistry, 2015, 2170, (11), 3819-3825.