undecene diacid

例句：

1. 1. The compound is used in the production of polyester fibers.
   这种化合物用于生产聚酯纤维。
2. 2. This acid is crucial for the chemical industry.
   这种酸对于化学工业至关重要。
3. 3. The undecene diacid is a key intermediate in the synthesis of plastics.
   十一烯二酸是合成塑料的关键中间体。