-dihydro-的意思|示意

The synthesis of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and its derivatives are briefly introduced, the current progresses on its development and application are also reviewed.

简要介绍了新型膦菲类阻燃剂9，10-二氢-9-氧杂-10-膦菲-10-氧化物（DOPO）及其衍生物的合成，综述了近年来国内外膦菲类阻燃剂的研究与应用进展情况。

The invention relates to a new derivative of aryl dihydro naphthalenes lignan and the medical application of said compound.

本发明涉及一种新的芳基二氢萘类木脂素衍生物，本发明还涉及 该类化合物的医药用途。

The splitting method adopted for preparing single chiral 2-heterocycle substituted dihydro pyrimidine compounds has the product yield more than 20 percent and the optical purity above 98 percent;

采用本发明的拆分方法制备单一手性2-杂环取代的 二氢嘧啶化合物的产物收率为20％以上，光学纯度达98％以上；

The invention discloses a fiber softening conditioning agent, which is formed by mixing dihydro butter alkyl dimethyl ammonium chloride, lanolin alcohol, calcium chloride and water.

本发明公开了一种纤维柔软调理剂，由二氢化牛油烷基二甲基氯化铵、羊毛脂醇、氯化钙、水混合组成。

A new flame retardant intermediate 9, 10 - dihydro - 9 - oxa - 10 - phosphaphenanthrene - 10 - oxide (DOP) was synthesized, and the appropriate synthesis conditions were studied.

合成了新型阻燃剂中间体9,10 -二氢- 9 -氧杂- 10 -磷杂菲- 10 -氧化物(DOP)，并对适宜的合成条件进行实验研究。

AIM To theoretically explore the mechanism of action of 5,6 diaryl 2,3 dihydro 1 pyrrolizinone derivatives.

目的探讨5 ，6 二芳基2 ，3 二氢1 吡咯里嗪酮类化合物的作用机制。