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发明人杨光,黄志刚,冯建国. "A Process for Preparing High-Purity 1-(3,4-Difluorophenyl)-N-(2-methoxyphenyl)-4-oxo-1,4-dihydropyridazine-3-carboxamide" [P]. 中国发明专利, 专利号 CN 114181074 A, 授权公告日 2021-05-24.
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