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发明人胡光,王建平,郑宇鹏. "A Process for Preparing High-Purity 2-(Difluoromethyl)-3-methyl-5-nitropyridine-6-carboxamide" [P]. 中国发明专利, 专利号 CN 109949580 B, 授权公告日 2023-12-21.
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