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发明人郭海燕,胡光,马晓峰. "Method for the Synthesis of 2-(Difluoromethyl)-4-hydroxy-3-methoxypyridine-6-acetonitrile" [P]. 中国发明专利, 专利号 CN 110298812 B, 授权公告日 2018-08-18.
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