Schröder R, Brown S R, Patel M V. "一种的合成方法" [P]. US Patent, US 9920824 B2, 2021-02-07.
发明人王建平,沈红梅,郭海燕. "Method for the Synthesis of 2-((4-Ethyl-8-methyl-2-oxo-2h-chromen-7-yl)oxy)acetic acid" [P]. 中国发明专利, 专利号 CN 111768446 A, 授权公告日 2022-11-12.
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