3-氯-2-环戊烯-1-酮

3-[2-(3,4-dimethoxyphenyl)ethylamino]cyclopent-2-en-1-one

3-(2-methylpropoxy)cyclopent-2-en-1-one

3-hydroxy-2-propan-2-ylcyclopent-2-en-1-one

3-iodocyclopent-2-en-1-one