发明人杨光,郭海燕,高志强. "Method for the Synthesis of Ethyl 4,5-difluoro-2-methylphenylacetate" [P]. 中国发明专利, 专利号 CN 111361251 B, 授权公告日 2018-12-07.
发明人杨光,刘建华,李文辉. "A Process for Preparing High-Purity Ethyl 4,5-difluoro-2-methylphenylacetate" [P]. 中国发明专利, 专利号 CN 114419818 A, 授权公告日 2024-07-05.
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