发明人郭海燕,徐明华,冯建国. "Method for the Synthesis of 3-Bromo-5,7-dichloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 111075555 B, 授权公告日 2019-06-25.
发明人刘建华,陈志强,唐晓军. "A Process for Preparing High-Purity 3-Bromo-5,7-dichloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine" [P]. 中国发明专利, 专利号 CN 109231143 A, 授权公告日 2022-09-15.
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