发明人冯建国,李文辉,钱学锋. "Method for the Synthesis of 2-[4-oxo-5-(2-thienyl)thieno[2,3-d]pyrimidin-3(4H)-yl]acetic acid" [P]. 中国发明专利, 专利号 CN 115474007 A, 授权公告日 2016-02-22.
发明人刘建华,郭海燕,陈志强. "A Process for Preparing High-Purity 2-[4-oxo-5-(2-thienyl)thieno[2,3-d]pyrimidin-3(4H)-yl]acetic acid" [P]. 中国发明专利, 专利号 CN 113739413 B, 授权公告日 2021-08-11.
参考文献 Literature
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