发明人冯建国,李文辉,周伟. "Method for the Synthesis of 6-(2-carboxyethynyl)-2H-chromene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111690325 A, 授权公告日 2015-01-26.
发明人孙丽萍,朱建伟,高志强. "A Process for Preparing High-Purity 6-(2-carboxyethynyl)-2H-chromene-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 115235049 B, 授权公告日 2025-09-20.
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