发明人王建平,赵玉洁,刘建华. "Method for the Synthesis of 2-(Benzoylcarbamothioylamino)-5,5-dimethyl-4,7-dihydrothieno[2,3-c]pyran-3-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 110089092 A, 授权公告日 2022-02-08.
发明人韩伟,孙丽萍,钱学锋. "A Process for Preparing High-Purity 2-(Benzoylcarbamothioylamino)-5,5-dimethyl-4,7-dihydrothieno[2,3-c]pyran-3-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 115642586 A, 授权公告日 2020-06-27.
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