4-methoxy-6-propylpyran-2-one

4-hydroxy-3-[1-(4-hydroxy-6-methyl-2-oxopyran-3-yl)butyl]-6-methylpyran-2-one

3-ethyl-2-hydroxy-7-methyl-4-n-propyl-3,4-dihydro-2H,5H-pyrano<3,2-c>-pyran-5-one

4-hydroxy-6-methyl-6-(1-phenylsulfanylbutyl)-3H-pyran-2-one

2,7-二甲基-2H-吡喃并[4,3-b]吡喃-5-酮