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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 ?
These commercial formulations do not take advantage of enantiomerically pure products, in which the active isomer is the predominant compound.
Chemoenzymatic syntheses of enantiomerically pure 4-aryl-3,4-dihydropyrimidin-2(1H)-ones," Journal of the Chemical Society, Perkin Transactions 1, no.
Prosvirnin, "Asymmetric transmission of light and enantiomerically sensitive plasmon resonance in planar chiral nanostructures," Nano Lett., Vol.
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.
A current challenge facing coordination chemists is that of obtaining enantiomerically pure compounds [6-11].
Ropivacaine is a long acting, enantiomerically pure (S-enantiomer) amide local anaesthetic, and with a low lipid solubility.
Poppe, Kinetic Resolution of trans-2- Acetoxycyclo-alkan-1-ols by Lipase-Catalysed Enantiomerically Selective Acylation, Tetrahedron Asym., 14, 2605 (2003).
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.
Myers, "Scalable synthesis of enantiomerically pure syn-2,3-dihydroxybutyrate by sharpless asymmetric dihydroxylation of p-phenylbenzyl crotonate," The Journal of Organic Chemistry, vol.
The (S)4-aminoquinazoline alcohols (66) were prepared from enantiomerically pure from (S)-quinazolinone alcohols.