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发明人李文辉,孙丽萍,徐明华. "Method for the Synthesis of 4,5-Dichloro-2-(2-tetrahydropyranyl)pyridazin-3(2H)-one" [P]. 中国发明专利, 专利号 CN 109361793 B, 授权公告日 2022-06-07.
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