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发明人郭海燕,李文辉,杨光. "Method for the Synthesis of 3-Bromo-4-chloro-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 111704016 B, 授权公告日 2015-08-02.
发明人郑宇鹏,沈红梅,郭海燕. "A Process for Preparing High-Purity 3-Bromo-4-chloro-6-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 109419664 B, 授权公告日 2023-06-28.
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