发明人刘建华,郭海燕,孙丽萍. "Method for the Synthesis of 3-Chloro-4-(methylsulfonyl)thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109263390 A, 授权公告日 2015-02-27.
发明人马晓峰,黄志刚,郭海燕. "A Process for Preparing High-Purity 3-Chloro-4-(methylsulfonyl)thiophene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109928896 B, 授权公告日 2019-06-22.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2021, 1648, (12), 8856-8865.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Agric. Food Chem., 2015, 2210, (8), 7713-7727.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 3-Chloro-4-(methylsulfonyl)thiophene-2-carboxylic acid Using HRMS and NMR". Phytochemistry, 2017, 1516, (1), 1378-1391.
Wang L, Li J, Zhang H. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2022, 1892, (6), 5487-5495.