发明人黄志刚,王建平,杨光. "Method for the Synthesis of 9-Oxo-9H-xanthene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 112343547 B, 授权公告日 2022-09-19.
发明人黄志刚,唐晓军,孙丽萍. "A Process for Preparing High-Purity 9-Oxo-9H-xanthene-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 117422649 A, 授权公告日 2022-03-03.
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