发明人李文辉,郭海燕,林芳. "Method for the Synthesis of tert-Butyl 3-(2-ethoxy-1-fluoro-2-oxoethylidene)-piperidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110662115 A, 授权公告日 2025-04-06.
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