发明人孙丽萍,何建平,陈志强. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 115438723 A, 授权公告日 2018-04-18.
发明人杨光,林芳,高志强. "Method for the Synthesis of 4-Methoxy-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine" [P]. 中国发明专利, 专利号 CN 108706714 B, 授权公告日 2021-12-07.
发明人陈志强,周伟,林芳. "A Process for Preparing High-Purity 4-Methoxy-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine" [P]. 中国发明专利, 专利号 CN 113480390 A, 授权公告日 2016-01-10.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2021, 363, 9456-9459.
Kim S H, Park J Y. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2023, 761, 741-767.
Mueller T, Schmidt R K. "Identification and Structural Characterization of a Novel Degradation Product of 4-Methoxy-1-methyl-1H-pyrazolo[3,4-d]pyrimidin-6-amine Using HRMS and NMR". Environ. Sci. Technol., 2025, 1604, 5529-5552.
Hughes D, Roberts J, Thomas A. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chemosphere, 2011, 2338, (1), 8532-8543.