相互有关的立体异构体作为对映异构体具有相同的连通性，但相互是非重叠镜像。
Stereoisomers related to each other as enantiomers have the same connectivitybut are non-superimposable mirror images of each other.
可以使用立体选择或立体专一的合成方法，或者外消旋混合物的分离，来获得单独的光学异构体。
Use of stereoselective or stereospecific synthetic methods or separation of racemic mixtures can be used to obtain individual optical isomers.
更复杂的情形是立体异构问题。
论述了非酯型拟除虫菊酯的研究进展，介绍了其结构特点、生物活性、研究现状、立体异构及抗性方面的内容。
Research advance on non ester pyrethroids was reviewed. Its structural feature, biological activity, research present situation, stereo isomer and resistance were described.
在弱共价键化合物中，占据座位SAS(立体角系数扣)值最太的异构体有利于配体堆积。
In weak covalent compounds, the isomer with the maximum SAS (Solid Angle Factor Sum) of the ligand-occupied seats is more favourable for ligand packing.
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.
制备R，R（或S，S）构型的格隆铵-立体异构体的方法。
Method for production of the R, R (or S, S) configuration of glycopyrronium stereoisomers.
潜在异构体，立体化学的识别，或潜在形成多晶型的信息因包含在内。
Information such as the potential for isomerism, the identification of stereochemistry, or the potential for forming polymorphs should also be included.
目的探讨山莨菪碱立体异构与生物活性的关系。
Objective To investigate the relationship between stereoisomerism and pharmacological activity of anisodamine.
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.
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.
从而表明本模型不但能用于同系物，而且亦可用于同分异构体及立体异构体保留行为的预测。
Moreover, it shows that the model can be used for the prediction of retention for isologous series$…
从而表明本模型不但能用于同系物，而且亦可用于同分异构体及立体异构体保留行为的预测。
Moreover, it shows that the model can be used for the prediction of retention for isologous series$…
应用推荐