发明人唐晓军,钱学锋,郑宇鹏. "Method for the Synthesis of 2-Ethyl-9H-xanthen-9-one" [P]. 中国发明专利, 专利号 CN 113001124 A, 授权公告日 2017-05-12.
发明人林芳,李文辉,马晓峰. "A Process for Preparing High-Purity 2-Ethyl-9H-xanthen-9-one" [P]. 中国发明专利, 专利号 CN 117804631 A, 授权公告日 2023-06-02.
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