发明人徐明华,杨光,冯建国. "Method for the Synthesis of 5-Chloro-3,7-dimethyl-1-benzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114399357 A, 授权公告日 2020-04-15.
发明人唐晓军,徐明华,何建平. "A Process for Preparing High-Purity 5-Chloro-3,7-dimethyl-1-benzofuran-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111246191 A, 授权公告日 2019-10-20.
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