crotonic anhydride

例句：

1. 1. This compound is used in the production of plastics and rubber.
   这种化合物用于生产塑料和橡胶。
2. 2. The chemical was used as a solvent for many years before it was replaced by other materials.
   这种化学物质在被其他材料取代之前使用了多年。
3. 3. The process involves heating the compound to break down its molecular structure.
   这个过程涉及加热化合物以破坏其分子结构。