发明人刘建华,杨光,冯建国. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 116770623 A, 授权公告日 2021-11-07.
发明人孙丽萍,罗永刚,杨光. "Method for the Synthesis of 6-Chloro-(3-methylthio)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 108232205 A, 授权公告日 2017-10-04.
发明人孙丽萍,冯建国,郭海燕. "A Process for Preparing High-Purity 6-Chloro-(3-methylthio)-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 116945396 A, 授权公告日 2020-06-15.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Chemosphere, 2011, 1016, 4803-4822.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Molecules, 2020, 95, (7), 5719-5733.
Fischer P, Wagner E. "Identification and Structural Characterization of a Novel Degradation Product of 6-Chloro-(3-methylthio)-1H-pyrazolo[3,4-d]pyrimidine Using HRMS and NMR". Biomed. Chromatogr., 2013, 2430, (8), 9676-9680.