英语语法分析

With the special activity, pyridyl and its derivatives have been important structures in developing medicine and pesticide.

吡啶基及其衍生物由于它们特有的活性，已成为新医药和农药开发中重要的组成基团。

AIM to design and synthesize 1 (5 fluoro 2 pyridyl) quinolone derivatives, and to study their in vitro antibacterial activities.

目的设计合成1位为5氟2吡啶基的吡酮酸衍生物，并对其抗菌活性进行初步评价。

Synthesis, Characterization and Fluorescence Properties of Rare Earth with p-Chloro-benzoic Acid and 2,4,6-Tris-(2-pyridyl)-s-triazine.

对氯苯甲酸-2，4，6-三吡啶基三嗪稀土配合物的合成、表征及发光性能。