7-羟基-2,2-二甲基-苯并二氢吡喃-4-酮

2,2,8,8-tetramethyl-2,3,8,9-tetrahydro-4H,10H-benzo<1,2-b:3,4-b'>dipyran-4,10-dione

1-(2',4'-dihydroxyphenyl)-3-methyl-1-oxo-2-butene

4-乙酰基-3-羟基乙酸苯酯

2,4-二羟基苯乙酮