发明人王建平,徐明华,林芳. "Method for the Synthesis of 2-Cyclopropyl-5-ethyl-6-methyl-3H,4H-thieno[2,3-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 114346217 B, 授权公告日 2022-12-15.
发明人郑宇鹏,周伟,孙丽萍. "A Process for Preparing High-Purity 2-Cyclopropyl-5-ethyl-6-methyl-3H,4H-thieno[2,3-d]pyrimidin-4-one" [P]. 中国发明专利, 专利号 CN 111271844 B, 授权公告日 2018-05-20.
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