发明人徐明华,郑宇鹏,沈红梅. "Method for the Synthesis of 5-Chloro-4-(isopropylamino)pyridine-3-sulfonic acid" [P]. 中国发明专利, 专利号 CN 110759121 B, 授权公告日 2020-05-28.
Nowak P, Johansson L, Schröder R. "A Process for Preparing High-Purity 5-Chloro-4-(isopropylamino)pyridine-3-sulfonic acid" [P]. European Patent, EP 3917075 A1, 2022-11-14.
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". J. Nat. Prod., 2013, 1635, (10), 539-559.
Zhang Y, Li Q, Chen T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 1278, (8), 8591-8604.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of 5-Chloro-4-(isopropylamino)pyridine-3-sulfonic acid Using HRMS and NMR". Phytochemistry, 2015, 2021, 7032-7046.
Fischer P, Wagner E. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2013, 1524, 8148-8161.