发明人钱学锋,高志强,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 114487191 A, 授权公告日 2015-08-05.
发明人张德明,沈红梅,冯建国. "Method for the Synthesis of 7-(Carboxymethyl)-2-methyl-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111355677 A, 授权公告日 2024-05-25.
发明人郭海燕,黄志刚,罗永刚. "A Process for Preparing High-Purity 7-(Carboxymethyl)-2-methyl-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112573189 B, 授权公告日 2017-03-24.
参考文献 Literature
Yang F, Sun W, Liu J. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Molecules, 2018, 1475, (4), 3682-3690.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2025, 2400, (5), 2123-2148.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 7-(Carboxymethyl)-2-methyl-4-oxo-4,7-dihydrothieno[2,3-b]pyridine-5-carboxylic acid Using HRMS and NMR". Biomed. Chromatogr., 2014, 769, (12), 4059-4074.
Mueller T, Schmidt R K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2025, 2441, (6), 9934-9948.