stereoisomer

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stereoisomer

 [ster″e-o-i´so-mer]
a compound showing stereoisomerism.

ster·e·o·i·so·mer

(ster'ē-ō-ī'sō-mĕr),
A molecule containing the same number and kind of atom groupings as another but in a different arrangement in space; the stereoisomers are not interconvertible unless bonds are broken and reformed, by virtue of which the molecule exhibits different optic properties, for example, as between d- and l-amino acids, or 5α- and 5β-steroids. Compare: isomer.
[stereo- + G. isos, equal, + meros, part]

ster·e·o·i·so·mer

(ster'ē-ō-ī'sŏ-mĕr)
A molecule containing the same number and kind of atom groupings as another but in a different arrangement in space, in virtue of which it exhibits different optic properties, e.g., as between d and l amino acids, 5α and 5β steroids.
Compare: isomer
[G. stereos, solid + G. isos, equal, + meros, part]

stereoisomer

one of two or more isomers that have the same molecular structure but differ in the spatial arrangement of the atoms in the molecule.

ster·e·o·i·so·mer

(ster'ē-ō-ī'sŏ-mĕr)
A molecule containing the same number and kind of atom groupings as another but in a different arrangement in space, in virtue of which it exhibits different optic properties.
[G. stereos, solid + G. isos, equal, + meros, part]
References in periodicals archive ?
In this context, the aim of this review is to highlight the importance of pyrethroid stereoisomers analyses and their evaluation of (bio) degradation and bioaccumulation pathways, as well as the environmental behavior of these target chemicals.
Stereoisomer rearrangement processes has been well studied and documented, but limited information is published with the new olefin refrigerants which have the potential for stereoisomer rearrangement.
It is noteworthy that GC-MS assays commonly used for urine organic acid analysis do not distinguish between the stereoisomers of 2-hydroxyglutaric acid.
This study uses a non-targeted metabolomics approach to predict potential DNT hazards from exposure to a commercial chemical mixture and individual stereoisomers. Metabolomics enables the assessment of changes in levels of low-molecular weight endogenous compounds after chemical exposure.
The Federal Circuit applied the primacy of obviousness to try to stereoisomers in Aventis Pharma Deutschland GmbH v.
Here, both natural and synthetic astaxanthin were successfully included into the CD hydrophobic cavity (Figure 1, SD available online at https://doi.org/10.1155/2017/8073798), showing that stereoisomers did not constrain the inclusion process, as confirmed by FTIR measurements.
During the last decades, researches have focused on the role of the two major inositol stereoisomers, MYO and DCI, in particular on the effects of the first on oocyte quality.
Sennoside A and B are optical stereoisomers and therefore they do not differ for their chemical properties; however their pharmacophoric features are diverse for their spatial orientation (Fig.
"Antibacterial activity of cholanic acids stereoisomers compared to cholic acid on the test cultures of microorganisms.", Annals of Mechnikov Institute, 2: 35-38.
Today it's unlikely that the selection of one enantiomer from a known racemate would result in patent protection as it is well known that different stereoisomers can have much different activity.
In 2008, University of California-Riverside researchers figured out the chemical structure of the bug's aggregation pheromone and named it "murgantiol." But they didn't describe the three-dimensional (3-D) arrangement of the chemical components-a property called "stereochemistry." Murgantiol's chemical formula has the potential for 16 different 3-D forms, known as "stereoisomers."
This molecule possesses three centers where stereoisomers can occur, and the naturally occurring molecule is the D-[alpha]tocopherol (RRR-[alpha]-tocopherol) configuration that has the highest vitamin activity (McDonald et al., 2011).