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发明人韩伟,马晓峰,刘建华. "Method for the Synthesis of 2-Oxo-N'-phenyl-2H-chromene-3-carbohydrazide" [P]. 中国发明专利, 专利号 CN 114615712 B, 授权公告日 2018-02-08.
发明人何建平,冯建国,郑宇鹏. "A Process for Preparing High-Purity 2-Oxo-N'-phenyl-2H-chromene-3-carbohydrazide" [P]. 中国发明专利, 专利号 CN 111958954 B, 授权公告日 2022-01-07.
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