发明人张德明,周伟,林芳. "Method for the Synthesis of Sitafloxacin Isomer Impurity 9(RRS)" [P]. 中国发明专利, 专利号 CN 115337143 A, 授权公告日 2025-07-02.
发明人林芳,马晓峰,李文辉. "A Process for Preparing High-Purity Sitafloxacin Isomer Impurity 9(RRS)" [P]. 中国发明专利, 专利号 CN 109122812 A, 授权公告日 2015-02-28.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 西他沙星异构体杂质9(RRS) in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2019, 1794, 3370-3387.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of 西他沙星异构体杂质9(RRS) as an Impurity". Phytochemistry, 2012, 1186, 8899-8908.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of Sitafloxacin Isomer Impurity 9(RRS) Using HRMS and NMR". J. Pharm. Biomed. Anal., 2011, 2333, (10), 9102-9111.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate 西他沙星异构体杂质9(RRS) Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2019, 1150, (1), 4693-4722.