发明人李文辉,赵玉洁,张德明. "Method for the Synthesis of 5-(Difluoromethyl)-4-hydroxy-3-(trifluoromethyl)picolinonitrile" [P]. 中国发明专利, 专利号 CN 116853482 B, 授权公告日 2023-11-04.
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