发明人赵玉洁,马晓峰,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117863928 A, 授权公告日 2022-07-03.
发明人刘建华,胡光,林芳. "Method for the Synthesis of 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115565059 B, 授权公告日 2018-04-09.
发明人韩伟,沈红梅,孙丽萍. "A Process for Preparing High-Purity 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113520218 A, 授权公告日 2017-05-11.
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". Molecules, 2018, 1600, (5), 1884-1891.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2012, 792, 7335-7343.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Oxo-1,4-dihydrothieno[2,3-d]pyrimidine-5-carboxylic acid Using HRMS and NMR". J. Sep. Sci., 2020, 1995, (7), 5747-5766.
Brown R C, Davis S M. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2016, 1338, (6), 1500-1517.