发明人马晓峰,刘建华,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112625550 A, 授权公告日 2023-05-24.
发明人何建平,周伟,高志强. "Method for the Synthesis of 1-(4-Isopropylphenyl)-6-mercapto-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 114467765 B, 授权公告日 2019-04-28.
发明人孙丽萍,赵玉洁,周伟. "A Process for Preparing High-Purity 1-(4-Isopropylphenyl)-6-mercapto-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one" [P]. 中国发明专利, 专利号 CN 109903120 A, 授权公告日 2018-06-05.
参考文献 Literature
Jensen P, Larsen A M, Olsen K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Sep. Sci., 2015, 2354, (12), 6268-6284.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Phytochemistry, 2016, 939, 7769-7783.
Yamamoto K, Tanaka H, Suzuki T. "Identification and Structural Characterization of a Novel Degradation Product of 1-(4-Isopropylphenyl)-6-mercapto-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one Using HRMS and NMR". Biomed. Chromatogr., 2024, 1399, (4), 9555-9572.
Yamamoto K, Tanaka H, Suzuki T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Molecules, 2015, 441, (1), 1994-1999.