发明人孙丽萍,朱建伟,刘建华. "Method for the Synthesis of 3-(3,4-Dimethoxybenzenesulfonyl)-7-hydroxy-2H-chromen-2-one" [P]. 中国发明专利, 专利号 CN 111550023 A, 授权公告日 2023-04-05.
发明人冯建国,韩伟,赵玉洁. "A Process for Preparing High-Purity 3-(3,4-Dimethoxybenzenesulfonyl)-7-hydroxy-2H-chromen-2-one" [P]. 中国发明专利, 专利号 CN 109336945 A, 授权公告日 2020-08-22.
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