3-(bromomethyl)-4-methylfuran-2,5-dione

3,4-bis(bromomethyl)furan-2,5-dione

血红素酸

5,8-dihydroxy-2,3,6,7-tetramethylnaphthalene-1,4-dione

5-ethyl-5-hydroxy-3,4-dimethylfuran-2-one