发明人徐明华,高志强,张德明. "Method for the Synthesis of 1-Methoxy-9H-xanthen-9-one" [P]. 中国发明专利, 专利号 CN 117389905 B, 授权公告日 2020-04-11.
发明人孙丽萍,胡光,郭海燕. "A Process for Preparing High-Purity 1-Methoxy-9H-xanthen-9-one" [P]. 中国发明专利, 专利号 CN 117102250 A, 授权公告日 2021-01-11.
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