这是二甲醚的结构异构体。
用键共振能和拓扑共振能方法对富勒烯C36CH2开环结构中的所有可能异构体及其阳离子和阴离子芳香性进行了研究。
Topological resonance energy (TRE) and bond resonance energy (BRE) methods were applied to all the open structure isomers (both cations and anions) of C36CH2 to investigate their aromaticity.
塔格糖是果糖的“差向异构体”，在分子水平上，除了第四个碳原子上的羟基和氢基团倒置外，D -塔格糖与D -果糖的结构是一样的。
On a molecular level, D-tagatose is structurally identical to D-fructose, except for an inversion of the hydroxyl and hydrogen groups at the fourth carbon atom.
沃纳所用的方法是从前有机化学家用来阐述取代苯结构的方法，即异构体计算法。
Werner's method was that used previously by organic chemists to elucidate the structures of substituted benzenes, namely isomer counting.
在QCD弦模型的基础上，基于弦和化学键的相似性，提出了四夸克态的环状颜色结构和QCD同分异构体的概念。
QCD isomeric compounds and a tetra-quark state with the square-like color structure based on a color string model and the similarity between string and chemical bond are proposed and studied.
其结构中包含许多二面角螺旋，而且具有旋光性的异构体，其结构的整体骨架也构成一个大的螺旋。
There are many helixes of dihedral Angle, and the whole skeleton forms a large helix in the structure of the rotatory isomer.
考察了不同碳链长度的直链醇、C8醇同分异构体、亲水基结构及催化剂种类对渗透性的影响。
The effects of straight chain alcohols with different chain length, C8 alcohol isomers, structures of hydrophilic group and kinds of catalyst on the permeability were examined.
同时首次发现食品中添加有与苏丹iii和IV结构极其近似的同分异构体存在，且其同分异构体也为红色物质。
We had found the isomers of Sudan III and Sudan IV in foods at first, their structures were very similar to Sudan III or IV and the isomers were red matter, too.
凡具相同分子式但不同结构式的物质称为异构体。
Substances which have identical molecular formulas but different strucural formulas, are known as isomers.
计算结果表明，氟代和氯代磷杂硫烯酮为累积双烯结构，磷杂硫烯酮的异构体含CP三键，所有分子都具有弯曲几何构型。
The results of calculation show that fluophosphathioketene and chlorophasphatioketene presents cumulative double bonds, isomer presents C(P)triple bonds, all of molecules have a trans-bent geometries.
它的分子结构中有一手性碳原子，大量研究结果证明其左旋光学异构体的生理活性比右旋异构体要高很多。
There is a chiral carbon atom in the EAMP's molecule and it has been proved that the S-EAMP has higher biological activity than that of the D-EAMP.
这些工程不但生产出了指定的催化剂，还有助于阐明酶的结构-作用关系，并且有助于说明这些酶的对应异构体选择性。
Beyond generating customized catalysts, these studies have helped to elucidate the enzyme's structure-function relationship and illuminate its enantioselectivity.
文中详列了各种“以（…）为”，分析了内部结构，并指出形成其同形异构体几大原因。
Wei" pattern, analyzes their inner structures, and points out the causes of the formation of such an isomer."
本文概括了虾青素的各种异构体及其对生物学功能发挥的差异，并论述了近年来在提高其水相分散度，增加其稳定性等方面的结构修饰的研究进展。
The research progress on astaxanthin' s molecular structure modification to increase its water dispersibility and stability for enhancing physiological function in recent years had b…
计算所得的奇数高碳团簇具有准笼状类富勒烯结构，其最低能量异构体都含有一个两配位的碳原子。
The lowest energy isomers of the odd-numbered clusters are cage-like pseudo-fullerenes containing a single two-fold coordinated carbon atom in addition to trivalent carbon atoms.
本文通过选用十一种具有极性梯度的不同固定液，探讨桂皮酸顺反异构体硅烷醚衍生物分离与选择性分子间引力的关系，并从分子结构的角度来阐述选择相应固定液进行异构体分离的可能性。
It is proposed that selective intermolecular force can be used as a new parameter for; selecting stationary phase in order to separate the isomer but not the "polarity similarity principle".
外消旋体、（R）-异构体和（S）-异构体具有相同的化学结构式，具有不同的立体结构和旋光性能。
The raceme, the (R)-isomer and the (S)-isomer are identical in chemical structural formula but different in stereostructure and optical rotation performance.
采用密度泛函方法优化得到了二个新的HSP (S) S连接方式的异构体，并对它们的几何结构与电子结构进行了讨论。
Two novel isomers of HPS3 system which have HSP (s) s connectivity are obtained by means of density functional methods, while their geometries and electronic structures are predicted.
本发明涉及具有以下结构式i的新颖化合物及其可药用盐或互变异构体、使用它们的组合物和使用它们的方法。
This invention relates to novel compounds having the structural Formula I below: and their pharmaceutically acceptable salts or tautomers, compositions and methods of use thereof.
本发明的该配合物结构单一，不存在异构体，该配合物具有结构确定、易于分离等特点。
The coordination compound provided by the invention has a single structure without any isomer, and is characterized in defined structure and easy separation.
本发明涉及以下结构式所示非对映异构体混合物及单个异构体成分。
The present invention is directed to the diastereoisomeric mixture and the individual isomeric components of the formula above.
本发明涉及以下结构式所示非对映异构体混合物及单个异构体成分。
The present invention is directed to the diastereoisomeric mixture and the individual isomeric components of the formula above.
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