英文同义词: | 6,7-DIHYDROXY-4-COUMARINYLACETIC ACID;6,7-DIHYDROXYCOUMARIN-4-ACETIC ACID;6,7-DIHYDROXY-4-COUMARINYLACETIC ACID,FO R FLUORESCENCE;6,7-Dihydroxy-2-oxo-2H-1-benzopyran-4-acetic Acid;2-(6,7-dihydroxy-2-oxo-2H-chromen-4-yl)acetic acid;2H-1-Benzopyran-4-acetic acid, 6,7-dihydroxy-2-oxo- |