发明人郭海燕,徐明华,陈志强. "Method for the Synthesis of 3-bromo-4-chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 115862431 B, 授权公告日 2015-05-15.
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