Kowalski A, Lefèvre J P, Schröder R. "Method for the Synthesis of 6-Fluoro-2-sulfanyl-1h-1,3-benzodiazole-4-carboxylic acid" [P]. European Patent, EP 3559773 A1, 2023-09-10.
发明人何建平,刘建华,李文辉. "A Process for Preparing High-Purity 6-Fluoro-2-sulfanyl-1h-1,3-benzodiazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 108732960 B, 授权公告日 2023-06-08.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2013, 499, 9159-9179.
O'Brien K, Kennedy M L. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Chromatogr. A, 2019, 1967, (12), 2924-2930.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of 6-Fluoro-2-sulfanyl-1h-1,3-benzodiazole-4-carboxylic acid Using HRMS and NMR". J. Sep. Sci., 2020, 1214, 4805-4816.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Talanta, 2018, 1615, 1829-1849.