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发明人沈红梅,韩伟,黄志刚. "Method for the Synthesis of 20261-31-8
4-Hydroxy-3-(hydroxy(oxido)amino)-2H-chromen-2-one
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3-Nitro-4-hydroxycoumarin" [P]. 中国发明专利, 专利号 CN 108421821 B, 授权公告日 2016-05-15.
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