发明人高志强,郭海燕,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 117327558 A, 授权公告日 2020-11-25.
发明人徐明华,周伟,黄志刚. "Method for the Synthesis of 4-methoxy-1H-pyrazolo[3,4-d]pyrimidin-6-amine" [P]. 中国发明专利, 专利号 CN 108026023 A, 授权公告日 2019-11-05.
Stevens L M, Schröder R, Hughes D C. "A Process for Preparing High-Purity 4-methoxy-1H-pyrazolo[3,4-d]pyrimidin-6-amine" [P]. US Patent, US 9960401 B2, 2016-11-01.
参考文献 Literature
Chen X Y, Liu M, Zhao W Q. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2022, 1779, 8574-8590.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Biomed. Chromatogr., 2013, 1676, (10), 5857-5884.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 4-methoxy-1H-pyrazolo[3,4-d]pyrimidin-6-amine Using HRMS and NMR". Molecules, 2018, 1514, (6), 1689-1703.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2021, 224, (5), 3239-3250.