发明人李文辉,赵玉洁,郑宇鹏. "Method for the Synthesis of Ethyl 5-hydroxy-2-oxo-2H-chromene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 113818637 A, 授权公告日 2024-05-01.
发明人郭海燕,郑宇鹏,罗永刚. "A Process for Preparing High-Purity Ethyl 5-hydroxy-2-oxo-2H-chromene-3-carboxylate" [P]. 中国发明专利, 专利号 CN 116511366 A, 授权公告日 2018-02-07.
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