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发明人赵玉洁,马晓峰,孙丽萍. "A Process for Preparing High-Purity Methyl 4-bromo-3-cyano-2-(difluoromethyl)benzoate" [P]. 中国发明专利, 专利号 CN 112185378 A, 授权公告日 2018-12-22.
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