发明人杨光,钱学锋,郭海燕. "Method for the Synthesis of {[3-(3,4-Dimethoxyphenyl)-2-oxo-2H-chromen-7-yl]oxy}acetic acid" [P]. 中国发明专利, 专利号 CN 115254877 A, 授权公告日 2022-10-05.
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