2H-1-苯并吡喃-2,4(3H)-二酮

苯甲酰氯

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

3-(2-hydroxybenzoyl)-3,4-dihydro-2H,5H-pyrano[2,3-b]chromen-5-one

4-hydroxy-3-({2-[(methylthio)methyl]-3-oxo-2,3-dihydro-1-benzofuran-2-yl}methyl)-2 H-chromen-2-one