cis-trans isomerism

(redirected from Geometric isomers)

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.
References in periodicals archive ?
halys adults and nymphs are, indeed, attracted to methyl (E,E,Z)-2,4,6-decatrienoate and related geometric isomers.
The geometric isomers of methyl 2,4,6-decatrienoate, including pheromones of at least two species of stink bugs.
In collaboration with the University of Shizuoka, the Suntory Institute for Bioorganic Research, and NARD Institute, Suntory has confirmed that the two compounds are geometric isomers with the same molecular weight (500) and molecular formula (C28H3004N8).
More familiar to chemists are geometric isomers, in which the same atoms arrange in different spatial patterns, and stereoisomers, in which atoms arrange range in different orientations around an atomic hub.
This chip also can be used for polar small molecules and structurally related compounds, such as geometric isomers and diastereoisomers.
Based on analysis of previously collected data, trans-ISA247 is more bioavailable and therefore we expect to administer the drug at a lower dose than the previous formulation which consisted of an equivalent mixture of the two geometric isomers (cis and trans)," stated Dr.
When we initiated this process, ISA247 was approximately an equivalent mixture of two geometric isomers (called, trans and cis), where just one of the isomers (trans) carried most of the desired activity of immunosuppression.