pentylidyne

例句：

1. 1. This compound is a key intermediate in the synthesis of many polymers.
   这种化合物是合成许多聚合物的关键中间体。
2. 2. The molecule has been shown to have anti-inflammatory properties.
   该分子已被证明具有抗炎性质。
3. 3. In organic chemistry, pentylidyne is often used as a reagent for synthesizing organic compounds.
   在有机化学中，五元乙炔常被用作合成有机化合物的试剂。