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发明人黄志刚,林芳,郭海燕. "A Process for Preparing High-Purity 3-(Difluoromethyl)-2-fluoro-5-formylisonicotinonitrile" [P]. 中国发明专利, 专利号 CN 112727356 A, 授权公告日 2024-02-14.
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