pyrvolidine

例句：

1. 1. The compound has a unique chemical structure that makes it useful in various applications.
   这种化合物具有独特的化学结构，使其在各种应用中都有用。
2. 2. Pyrvolidine is a key intermediate in the synthesis of many pharmaceutical drugs.
   吡咯烷二胺是合成许多药物的中间体的关键成分。
3. 3. In organic chemistry, pyrvolidine is often used as a starting material for the synthesis of other compounds.
   在有机化学中，吡咯烷二胺经常被用作其他化合物合成的起始材料。