发明人李文辉,郑宇鹏,钱学锋. "Method for the Synthesis of 5-Amino-1-ethyl-3,3-difluoroindolin-2-one" [P]. 中国发明专利, 专利号 CN 108712486 B, 授权公告日 2019-03-21.
发明人罗永刚,韩伟,刘建华. "A Process for Preparing High-Purity 5-Amino-1-ethyl-3,3-difluoroindolin-2-one" [P]. 中国发明专利, 专利号 CN 112708521 A, 授权公告日 2017-01-01.
参考文献 Literature
Xu M, Hu Y, Zhou D. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Sci. Total Environ., 2011, 2303, (2), 1466-1484.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2025, 1663, (5), 3680-3691.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 5-Amino-1-ethyl-3,3-difluoroindolin-2-one Using HRMS and NMR". Talanta, 2023, 1662, (8), 2260-2272.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2017, 1274, (2), 7497-7524.