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发明人冯建国,高志强,罗永刚. "Method for the Synthesis of 3-(4-Ethoxy-3-methoxyphenyl)-2-oxopropanoic acid" [P]. 中国发明专利, 专利号 CN 117166808 A, 授权公告日 2019-12-10.
发明人郭海燕,马晓峰,郑宇鹏. "A Process for Preparing High-Purity 3-(4-Ethoxy-3-methoxyphenyl)-2-oxopropanoic acid" [P]. 中国发明专利, 专利号 CN 112857296 B, 授权公告日 2020-12-28.
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