发明人李文辉,陈志强,钱学锋. "Method for the Synthesis of Ethyl 2-(1,1-difluoro-6-oxospiro[2.5]Octan-5-yl)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 108609650 A, 授权公告日 2022-07-04.
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