英语释义

1. any of three univalent radicals C5H4N derived from pyridine by removal of one hydrogen atom

片语

pyridyl isothiocyanate吡啶基异硫氰酸酯

pyridyl thiol吡啶硫酚

Pyridyl sulfonylurea吡啶磺酰脲

pyridyl triazolothiadiazole吡啶均三唑并噻二唑

pyridyl piperazine哌嗪

pyridyl benzimidazole苯并咪唑

pyridyl ester吡啶酯

-pyridyl氮苯基；吡啶基

pyridyl ring吡啶环

英汉例句

• five analogs of imidacloprid, 1 (2 chloro 5 pyridyl) methyl 2 nitroiminoimidazolidine, were synthesized by replacing the pyridyl group of imidacloprid with other heterocyclic groups.

  吡虫啉是吡啶类农药开发最成功的产品之一，但其中间体2氯5氯甲基吡啶的合成工艺较复杂。

• a specific method developed for the determination of pyridyl propanol in biological specimens by using uv spectrophotometry was adopted in the study of its toxicokinetics in rats.

  本文报告了利用紫外分光光度法测定生物样品中的吡啶基丙醇方法，用该方法研究了它在大鼠体内的代谢动力学。

• the pyridyl rings may rotate toward perpendicular direction or co-plane direction with porphyrin core plane for non-intercalated structure.

  而以非插入方式作用时吡啶基团会向垂直于或者平行于卟啉环平面转动。

• the structure-activity relationships of these compounds indicated that pyridyl group on the 4-styrene pyridine ring was necessary for the activity;

  初步构效关系表明，反-4-苯乙烯基吡啶母环上的吡啶基是活性必须基团；

• then, it was verified with hydrocarbon bromide that pyridyl was grafted on the surface of microsphere prepared in methanol by precipitation polymerization.

  于是，利用溴代烃和吡啶基的反应证实在甲醇中进行的这个沉淀聚合产物的表面覆盖的是吡啶基。

• chloro-4-nitropyridine is a very important intermediate, which was used for synthesizing plant-growth regulators and herbicides of pyridyl-phenyl urea and pyridyl medicines.

  氯-4-硝基吡啶是吡啶基苯脲类植物生长调节剂、除草剂和吡啶基医药产品的重要中间合成体。

• and the carboxyl and pyridyl group can make the resultant polymer have the ability to react with small molecular ru complex.

  具有配位能力的吡啶基团或羧基的引入使聚合物易于结合小分子钌配合物。

• urea-based pyridyl ligands have drawn much attention in recent years due to their capacity of coordinating with metal ions by the pyridyl group and binding anions by the urea functionalities.

  吡啶脲类配体因其既能够与过渡金属配位，又能与阴离子形成氢键作用，近年来备受化学家的关注。

• nonatural amino acids, n protected d (l ) 4 pyridyl alanine was synthezed. it was identified by optical analysis, 1h nmr, ir and elementary analysis.

  合成了非天然氨基酸n保护的d （l ）4吡啶丙氨酸，其结构分别通过旋光度、核磁共振、红外、元素分析得到确证。