发明人陈志强,高志强,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108445037 A, 授权公告日 2024-07-09.
发明人孙丽萍,李文辉,张德明. "Method for the Synthesis of Ethyl 4-[[1-Oxo-4-[(1,5,6,7-tetrahydro-4-oxo-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-2-yl)thio]butyl]amino]benzoate" [P]. 中国发明专利, 专利号 CN 117509403 B, 授权公告日 2018-08-25.
发明人沈红梅,赵玉洁,钱学锋. "A Process for Preparing High-Purity Ethyl 4-[[1-Oxo-4-[(1,5,6,7-tetrahydro-4-oxo-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-2-yl)thio]butyl]amino]benzoate" [P]. 中国发明专利, 专利号 CN 117382924 A, 授权公告日 2015-03-21.
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. Nat. Prod., 2010, 2359, 460-469.
Garcia M, Rodriguez P. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Food Chem., 2020, 722, (11), 598-625.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 4-[[1-Oxo-4-[(1,5,6,7-tetrahydro-4-oxo-4H-cyclopenta[4,5]thieno[2,3-d]pyrimidin-2-yl)thio]butyl]amino]benzoate Using HRMS and NMR". Chemosphere, 2025, 2025, (10), 6568-6592.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Sci. Total Environ., 2013, 1475, 9239-9250.