发明人杨光,陈志强,郭海燕. "Method for the Synthesis of 2,2-Dimethyl-3-oxo-2,3-dihydrobenzofuran-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 114035653 A, 授权公告日 2019-02-27.
发明人赵玉洁,钱学锋,马晓峰. "A Process for Preparing High-Purity 2,2-Dimethyl-3-oxo-2,3-dihydrobenzofuran-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112346458 B, 授权公告日 2025-05-11.
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