lactone isomerism

例句：

1. 1.The lactone isomers of the compound have been studied extensively in recent years.
   这种化合物的缩醛异构体近年来已经广泛研究。
2. 2. The lactone isomers are responsible for the unique properties of the compound.
   这些缩醛异构体是化合物独特性质的来源。
3. 3. The lactone isomers were found to be more stable than their corresponding ketones.
   发现缩醛异构体比相应的酮更稳定。