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发明人郭海燕,徐明华,韩伟. "Method for the Synthesis of 2-[(6-chloro-3,4-dimethyl-2-oxo-2h-chromen-7-yl)oxy]propanoic acid" [P]. 中国发明专利, 专利号 CN 117768506 B, 授权公告日 2018-11-21.
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