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发明人张德明,周伟,孙丽萍. "Method for the Synthesis of 4-(2',4'-Difluoro-[1,1'-biphenyl]-4-yl)-2-methylene-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 115677914 B, 授权公告日 2023-02-03.
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