7-hydroxy-3-[hydroxy(phenyl)methylidene]chromene-2,4-dione

1-(2-hydroxy-4-tetrahydropyran-2-yloxy-phenyl)-3-phenyl-propane-1,3-dione

1-(2,4-dihydroxyphenyl)-2-(triphenylphosphoranylidene)ethanone

4-羟基-7-甲氧基香豆酯

4-O-benzoyl-7-methoxycoumarin