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发明人林芳,郑宇鹏,冯建国. "A Process for Preparing High-Purity 3-(4,4-Difluoropiperidin-1-yl)picolinaldehyde" [P]. 中国发明专利, 专利号 CN 112892724 A, 授权公告日 2023-05-15.
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