[1-(6-oxocyclohexa-2,4-dien-1-ylidene)ethylamino]urea

2-羟基-5-氯苯乙酮

3-allylacetylacetone

1-[2-(3-methylbut-2-enoxy)phenyl]ethanone

2'-乙酰氧基苯乙酮