dihalogenated ester

例句：

1. 1. The dihalogenated ester is a key intermediate inthe synthesis of many pharmaceuticals.
   双卤代酯是合成许多药物的关键中间体。
2. 2. The dihalogenated esterwas used as a solvent forthe reaction.
   双卤代酯用作反应的溶剂。
3. 3. The dihalogenatedester has been shown to have antibacterial properties.
   双卤代酯已被证明具有抗菌性质。