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发明人刘建华,何建平,马晓峰. "A Process for Preparing High-Purity 2-(3-Chlorophenyl)-4-((dimethylamino)methylene)oxazol-5(4H)-one" [P]. 中国发明专利, 专利号 CN 116056131 A, 授权公告日 2024-03-26.
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