ethyl E-3-(5-acetyl-2,4-dihydroxyphenyl)-2-butenoate

1-(3-乙酰基-2,6-二羟基苯基)乙酮

乙酸酐

3,5-二羟基苯乙酮

1,1'-(4,6-二羟基苯)二乙酮