pyrethrol

例句：

1. 1. The compound is a key intermediate in the synthesis of many pharmaceuticals.
   该化合物是合成许多药物的关键中间体。
2. 2. The molecule is responsible for the biological activity of this antibiotic.
   这个分子负责这种抗生素的生物活性。
3. 3.Pyrethrol is used as a stabilizer in the production of polyurethane foam.
   吡咯烷酮用作聚氨酯泡沫生产的稳定剂。