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发明人何建平,郑宇鹏,陈志强. "A Process for Preparing High-Purity 2-(Difluoromethyl)-4-hydroxy-3-nitro-6-(trifluoromethyl)pyridine" [P]. 中国发明专利, 专利号 CN 111820938 B, 授权公告日 2025-01-23.
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