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Either of a pair of molecules that are mirror images but cannot be superimposed on each other, and that rotate the plane of polarized light by an equal amount in opposite directions. Also called enantiomorph, optical isomer.

[Greek enantios, opposite; see ant- in Indo-European roots + -mer, isomer.]

en·an′ti·o·mer′ic (-mĕr′ĭk) adj.


(Chemistry) chem a molecule that exhibits stereoisomerism because of the presence of one or more chiral centres


(ɪˈnæn ti ə mər)

either of a pair of optical isomers that are mirror images of each other.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.enantiomer - either one of a pair of compounds (crystals or molecules) that are mirror images on each other but are not identical
chemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
References in periodicals archive ?
Nevertheless, synthesizing enantiomerically pure drugs on a commercial scale wasn't feasible until 1974, when William Knowles discovered a commercially viable way to make l-DOPA, for which he shared a Nobel Prize in 2001.
Ropivacaine is a long acting, enantiomerically pure (S-enantiomer) amide local anaesthetic, and with a low lipid solubility.
The new strategy will be applied to develop proficient enzymes for the synthesis of enantiomerically pure -blocker drugs for treating cardiovascular problems at a reduced cost.
Poppe, Kinetic Resolution of trans-2- Acetoxycyclo-alkan-1-ols by Lipase-Catalysed Enantiomerically Selective Acylation, Tetrahedron Asym.
New optically active 2H-azirin-3-amines as synthons for enantiomerically pure 2,2-disubstituted glycines: synthesis of synthons for Tyr(2Me) and Dopa(2Me), and their incorporation into dipeptides.
Valiahdi y otros diez autores, (1R,2R,4R)-4-Methyl-1,2-cyclohexanediamine) oxalatoplatinum(II): A Novel Enantiomerically Pure Oxaliplatin Derivative Showing Improved Anticancer Activity in Vivo, J.
Thus, new methods for obtaining optically active sulfoxides are required for the synthesis of enantiomerically enriched compounds.
More than 50% of the top 100 drugs are based on enantiomerically pure molecules and such drugs already today exhibit sales exceeding 100 billion US-Dollars.
Enantiomerically pure tetrahydroquinoline derivatives as in vivo potent antagonists of the glycine binding site associated to the NMDA receptor.
Our goal is to synthesize enantiomerically enriched [alpha]-methyl lysine analogues from a common synthon.