发明人周伟,李文辉,徐明华. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114616896 A, 授权公告日 2021-05-24.
发明人钱学锋,陈志强,张德明. "Method for the Synthesis of 8-((2-(Dimethylamino)ethyl)amino)-9-oxo-9H-xanthen-2-yl 4-methylbenzenesulfonate" [P]. 中国发明专利, 专利号 CN 116623114 B, 授权公告日 2022-12-22.
发明人郭海燕,王建平,韩伟. "A Process for Preparing High-Purity 8-((2-(Dimethylamino)ethyl)amino)-9-oxo-9H-xanthen-2-yl 4-methylbenzenesulfonate" [P]. 中国发明专利, 专利号 CN 109929196 B, 授权公告日 2021-08-16.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2019, 2477, (3), 9563-9583.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2022, 1453, (9), 9204-9227.
Yang F, Sun W, Liu J. "Identification and Structural Characterization of a Novel Degradation Product of 8-((2-(Dimethylamino)ethyl)amino)-9-oxo-9H-xanthen-2-yl 4-methylbenzenesulfonate Using HRMS and NMR". J. Pharm. Biomed. Anal., 2022, 232, 9136-9148.
Kowalski T, Nowak Z. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Methods, 2017, 893, (2), 5765-5791.