发明人黄志刚,孙丽萍,冯建国. "Method for the Synthesis of 3-bromo-1-ethyl-4H-pyrazolo[4,3-d]pyrimidin-7-one" [P]. 中国发明专利, 专利号 CN 110015988 B, 授权公告日 2015-02-25.
发明人赵玉洁,郑宇鹏,张德明. "A Process for Preparing High-Purity 3-bromo-1-ethyl-4H-pyrazolo[4,3-d]pyrimidin-7-one" [P]. 中国发明专利, 专利号 CN 109255300 A, 授权公告日 2016-06-03.
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