发明人赵玉洁,陈志强,王建平. "Method for the Synthesis of 2-Methylthieno[3,2-d]pyrimidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114462848 A, 授权公告日 2016-03-27.
发明人孙丽萍,刘建华,郭海燕. "A Process for Preparing High-Purity 2-Methylthieno[3,2-d]pyrimidine-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111306773 B, 授权公告日 2016-04-13.
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