发明人徐明华,钱学锋,王建平. "一种5,6-二甲氧基苯并呋喃-2-甲酸的合成方法" [P]. 中国发明专利, 专利号 CN 111310477 A, 授权公告日 2018-09-22.
发明人黄志刚,林芳,孙丽萍. "Method for the Synthesis of 5,6-Dimethoxybenzofuran-2-carboxylic Acid" [P]. 中国发明专利, 专利号 CN 111773572 A, 授权公告日 2015-03-27.
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