发明人韩伟,冯建国,孙丽萍. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109974776 A, 授权公告日 2022-11-19.
Mueller T, Williams B T, Chen K W. "Method for the Synthesis of 2-Ethyl-7-methyl-1H-imidazo[4,5-b]pyridine-5-carboxylic acid" [P]. US Patent, US 11867030 B2, 2021-06-07.
发明人徐明华,刘建华,张德明. "A Process for Preparing High-Purity 2-Ethyl-7-methyl-1H-imidazo[4,5-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111048678 A, 授权公告日 2022-07-17.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Chromatogr. A, 2011, 1062, (12), 5940-5969.
Kumar A, Sharma P, Patel R S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Talanta, 2014, 1873, (11), 2673-2694.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 2-Ethyl-7-methyl-1H-imidazo[4,5-b]pyridine-5-carboxylic acid Using HRMS and NMR". Chromatographia, 2023, 1827, (6), 4606-4615.
Lee J H, Choi Y S. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2015, 940, (7), 4377-4394.