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cis-trans isomerism
(redirected from Cis-isomer)

    Also found in: Wikipedia 0.01 sec.
cis-trans isomerism [′si¦stranz ī′säm·ə‚riz·əm]
(organic chemistry)
A type of geometrical isomerism found in alkenic systems in which it is possible for each of the doubly bonded carbons to carry two different atoms or groups; two similar atoms or groups may be on the same side (cis) or on opposite sides (trans) of a plane bisecting the alkenic carbons and perpendicular to the plane of the alkenic system.
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Similar to the notched IZOD impact strength, there is a gradual increasing trend in the tensile strength with increasing the content of cis-isomers of rubber type.
Effect of rubber types on synthesis, morphology, and properties of ... by Yu, Zhisheng; Li, Yang; Zhao, Zhongfu; Wang, Chaoxian; Yang, Juan; Zhang, Chunqing; Li, Zhansheng; W / Polymer Engineering and Science
Fermented to the same high quality as that available from Japan, the product is a "natural," all-trans CoQ10 with no cis-isomer impurities.
European distribution Agreement for Daiichi by Nutraceutical Business & Technology
As in the case of cis-stilbene and cis-stilbene oxide, the activities of the cis-isomers were much lower than those of the trans-compounds (Sugihara et al.
Estrogenic activity of styrene oligomers after metabolic activation ... by Ohta, Shigeru / Environmental Health Perspectives
 
 
 
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