发明人刘建华,钱学锋,何建平. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112435317 A, 授权公告日 2021-04-06.
发明人张德明,黄志刚,李文辉. "Method for the Synthesis of Methyl 2,5-dimethyl-4-sulfanylthieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 115971458 A, 授权公告日 2020-09-21.
发明人何建平,沈红梅,罗永刚. "A Process for Preparing High-Purity Methyl 2,5-dimethyl-4-sulfanylthieno[2,3-d]pyrimidine-6-carboxylate" [P]. 中国发明专利, 专利号 CN 108685821 B, 授权公告日 2022-08-10.
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