立体异构体

因为紫花石蒜碱又与epitazettine显然不同，所以推定它可能为B/D或C/D环系统结合不同于tazettine的立体异构体。

Because squamigerine is also apparently not identical to epitazettine , it was deduced to be the stereoisomer of tazettine , in which the B / D or C / D ring system was different from that of tazettine .

沉香呋喃类立体异构体的气相色谱及气-质联用分析研究

The qi ( vital energy ) studies on the analysis of stereoisomer of agarofurans by GC and GC-MS

测定梭曼四种立体异构体的NMR研究

NMR study on Determination of the four stereoisomers of soman

HM-PAO非对映立体异构体的核磁共振鉴定及立体异构纯度的测定

NMR identification and stereoisomeric purity determination of HM-PAO diastereoisomers

用毛细管色谱法分析14种拟除虫菊酯立体异构体

Analysis of the Stereoisomers of 14 Pyrethroids by Capillary Gas Chromatography

脑血流显象剂六甲基丙二胺肟的制备及其立体异构体的比较与临床初步应用

Synthesis of Hexamethyl Propylamine Oxime and Comparative Study of Its Diastereoisomers

氯氰菊酯立体异构体分析方法研究概述

Outline of the Studies on Analytical Methods for Cypermethrin Isomers

其谱态可作为上述立体异构体的结构区分特征。

The spectral patterns can be used to characterize the above stereoisomers .

氯氰菊酯立体异构体的毛细管气相色谱分离与测定

Separation and Determination of the Stereoisomers of Cypermethrin by Capillary Gas Chromatography

山莨菪碱四个立体异构体与M胆碱受体作用的强度比较

Potencies of Four Stereoisomers of Anisodamine on Muscarinic Receptor

生命体系有极强的手性识别能力，不同构型的立体异构体往往表现出极不相同的生理效能。

The life system has a very strong ability of identifying the chirality .

固-液制备色谱分离氢化可的松立体异构体

Separation of hydrocortisone isomers with liquid solid preparative chromatography

球形分子烙印聚合物分离立体异构体

Beaded Molecule Imprinted Polymer for Stereo Isomer Separation

而ClONO2异构为立体异构体的反应是最难进行的反应。

Among these reactions of ClONO_2 , the stereoisomer reaction is the hardest one .

本文考察了十三个鬼桕毒及其衍生物的立体异构体的质谱性能。

Mass spectra of thirteen epimers of podophyllotoxin and its derivatives have been examined .

薄层色谱法分离烷基芳基酮肟立体异构体

An Investigation in Separation of the Geometric Isomers of Alkyl Aryl Ketone Oxime by TLC

盐酸反式曲马朵口服制剂中盐酸曲马朵立体异构体的分离与测定

Separation and Determination of the Isomers of Tramadol Hydrochloride in the Oral Preparations of trans - Tramadol Hydrochloride

分子中原子在空间定向的方式不同的化合物叫做立体异构体。

Differ in the way in which the atoms within the molecule are oriented in space are called stereoisomer .

正相条件下温度和流速对衍生化环糊精键合手性高效液相色谱固定相立体异构体选择性的影响

Influence of Temperature and Flow Rate on Enantioselectivity About Derivative β - Cyclodextrin Bonded Stationary Phase in Normal-Phase Liquid Chromatography

本文介绍了氯氰菊酯立体异构体使用毛细管气相色谱法和高效液相色谱法的硅胶柱和键合固定相柱的分离方法。

The paper introduces analytical methods for cypermethrin isomers using capillary column gas chromatography and silica and bonded phase columns of HPLC .

配位化合物立体异构体数目的拓扑学研究Ⅱ.n个任意单齿配体配合物的立体异构体数目

A TOPOLOGICAL STUDY OF THE NUMBER OF STEREOISOMERS OF COORDINATION COMPOUNDS & (ⅱ) Stereoisomers of the coordination compounds with a distinct monodentate ligands

解剖组织中速灭杀丁的气相色谱测定氰戊菊酯立体异构体在手性键合相上的分析

Quantitative Analysis of the Fenvalerate in Postmortem Tissues by Gas Chromatography Determination of Fenvalerate Stereoisomers on the Chiral Stationary Phase by High-Performance Liquid Chromatography

手性化合物中不同立体异构体具有不同的生理活性，许多医用药品要求必须是单一性化合物。

Different stereo isomers of chiral compounds have different biological activity , a lot of medicines are required to be in form of unitary compounds .

瑞波西汀在抑郁症的短期和长期治疗中均表现出有效性和耐受性，而且（S，S）型立体异构体的抗抑郁能力最高。

Reboxetine shows efficacy and tolerability in both short and long term treatment of depression , and the ( S , S ) enantiomer is the most potent .

本文研究了一系列萜类官能团位置异构体和立体异构体的氨及异丁烷化学电离质谱；

The chemical ionization ( CI ) mass spectra of a series of terpene functional group positional isomers and stereoisomers have been studied using ammonia and isobutane as reagent gases .

与一般钼体系相比，所得聚合物中1,2-链节的全同立体异构体的序列长度有所增加，约为4.2。

In addition , with this catalyst system , the sequence length of isotactic 1,2-unit in polymer obtained can reach 4.2 , a value which is slightly higher than those obtainable by ordinary molybdenum catalyst systems .

综述手性化合物的萃取分离方法，包括亲合萃取分离、配位萃取分离、形成非对映体立体异构体萃取分离、离子交换反应萃取分离、反相胶团萃取分离以及膜萃取分离。

The methods of extraction separation of chiral compounds were reviewed , including affine extraction separation , ligand extraction separation , forming non-enantiomer extraction separation , ion-exchange reaction extraction separation , reversed micelle extraction separation and membrane extraction separation .

共轭亚油酸是亚油酸的立体和位置异构体的混合物。

Conjugated linoleic acids is a mixture of geometric and positional isomers of linoleic acid .

最后解释了生物标志化合物胆甾烷的立体同分异构体不同深度丰度变化的原因。

Finally , the reason for stereo-isomer variation of cholestane in different depths and abundances are explained .

此外，通过NBO方法分析了分子的超共轭作用和立体排斥能对异构体稳定性的影响，结果表明超共轭作用是影响各异构体构型相对稳定性的主要因素。

In addition , NBO analysis shows that it is hyperconjugation rather than repulsive forces that plays a key role in the relative stabilities of isomers .