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发明人何建平,郭海燕,李文辉. "A Process for Preparing High-Purity 4-Bromo-3-cyano-6-(difluoromethyl)picolinoyl chloride" [P]. 中国发明专利, 专利号 CN 115076724 A, 授权公告日 2018-04-15.
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