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发明人郑宇鹏,李文辉,冯建国. "A Process for Preparing High-Purity 7-Amino-2-(4-(dimethylamino)phenyl)-8-nitro-4H-chromen-4-one" [P]. 中国发明专利, 专利号 CN 108515745 A, 授权公告日 2015-01-14.
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