发明人刘建华,高志强,陈志强. "Method for the Synthesis of 4-((5,6-Dimethylthieno[2,3-d]pyrimidin-4-yl)amino)butanoic acid" [P]. 中国发明专利, 专利号 CN 112600440 A, 授权公告日 2023-04-25.
发明人高志强,杨光,孙丽萍. "A Process for Preparing High-Purity 4-((5,6-Dimethylthieno[2,3-d]pyrimidin-4-yl)amino)butanoic acid" [P]. 中国发明专利, 专利号 CN 110793299 B, 授权公告日 2019-07-08.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2013, 2216, 3260-3264.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2010, 2183, (11), 3663-3690.
O'Brien K, Kennedy M L. "Identification and Structural Characterization of a Novel Degradation Product of 4-((5,6-Dimethylthieno[2,3-d]pyrimidin-4-yl)amino)butanoic acid Using HRMS and NMR". Chromatographia, 2014, 913, (1), 7868-7890.
Chen X Y, Liu M, Zhao W Q. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2021, 2316, 5997-6017.