发明人陈志强,林芳,朱建伟. "Method for the Synthesis of 2-Ethyl-6-hydroxy-N-methylbenzofuran-3-carboxamide" [P]. 中国发明专利, 专利号 CN 109586120 A, 授权公告日 2019-04-05.
发明人赵玉洁,胡光,陈志强. "A Process for Preparing High-Purity 2-Ethyl-6-hydroxy-N-methylbenzofuran-3-carboxamide" [P]. 中国发明专利, 专利号 CN 111218976 B, 授权公告日 2022-10-14.
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