pyridyl

例句：

1. 1.The compound is used as a catalyst in the synthesis of pyridyl-based drugs.
   该化合物在合成基于吡啶的药品时用作催化剂。
2. 2.The molecule was found to have a pyridyl group at the center.
   该分子被发现中心有一个吡啶基团。
3. 3. The reaction mechanism involves the formation of a pyridyl radical intermediate.
   该反应机制涉及形成吡啶基自由基中间体。