stereoisomerism

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stereoisomerism

 [ster″e-o-i-som´er-izm]
the relationship between two or more isomers that have the same structure (the same linkages between atoms) but different configurations (spatial arrangements), in contrast to constitutional isomerism in which the isomers have different structures. Stereoisomers are further classified into enantiomers, those having molecules that are mirror images of each other, and diastereoisomers, those that do not. adj., adj stereoisomer´ic.
Stereoisomerism, exemplified by a pair of cis-trans diastereoisomers. From Dorland's, 2000.

ster·e·o·i·som·er·ism

(ster'ē-ō-ī-som'ĕr-izm),
Molecular asymmetry, isomerism involving different spatial arrangements of the same groups (for example, androsterone and isoandrosterone, differing only in that one has a 3α-OH, the other a 3β-OH).
See also: stereoisomer, Le Bel-van't Hoff rule.

ster·e·o·i·som·er·ism

(ster'ē-ō-ī-som'ĕr-izm)
Molecular asymmetry; isomerism involving different spatial arrangements of the same groups.
See also: stereoisomer

stereoisomerism

Mirror-image molecular asymmetry. Also known as CHIRALITY. In the case of amino acids, the two forms are represented on paper with the carboxyl group of the carbon chain at the top. In the Laevo (L) form, the functional groups connected to the central carbon or carbon chain are shown as projecting to the left and in the dextro (D) form they are shown projecting to the right.