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发明人周伟,罗永刚,张德明. "Method for the Synthesis of 1-(4-Fluorophenyl)-9-methyl-2-(2,3,4-trifluorophenoxy)-1H-purin-6(9H)-one" [P]. 中国发明专利, 专利号 CN 115294325 A, 授权公告日 2015-09-17.
发明人张德明,孙丽萍,陈志强. "A Process for Preparing High-Purity 1-(4-Fluorophenyl)-9-methyl-2-(2,3,4-trifluorophenoxy)-1H-purin-6(9H)-one" [P]. 中国发明专利, 专利号 CN 110254193 B, 授权公告日 2019-03-26.
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