enantiomericadj.
/ᵻˌnantɪə(ʊ)ˈmɛrɪk/, /ɛˌnantɪə(ʊ)ˈmɛrɪk/, U.S. /əˌnæntioʊˈmɛrɪk/, /ɛˌnæntioʊˈmɛrɪk/ Chemistry.
Of the nature of an enantiomer; of or relating to enantiomers.
ΚΠ
1933 Jrnl. Amer. Chem. Soc. 55 164 The enantiomeric levo tartrate likewise does not deviate in this respect from dextro tartrate.
1959 D. J. Cram & G. S. Hammond Org. Chem. vi. 127 Compounds XIa and XIb, which are also enantiomeric, are incapable of interconversion.
1976 Science 2 July 24/2 The maintenance of enantiomeric purity..is less puzzling but nevertheless still challenging to chemists.
2001 Guardian 4 Oct. (Online section) 11/5 Propoxyphen, a synthetic version of opium, is a painkiller in one enantiomeric form and a cough relief drug in the other.
Compounds
enantiomeric excess n. the excess of one enantiomer over another in a mixture, typically expressed as a percentage; (also) the fact of a mixture containing one enantiomer in excess of another.
ΚΠ
1953 Jrnl. Org. Chem. 18 436 The two diastereomeric coordination complexes would be expected to compete at different rates for a deficiency of the isocyanate..to give an enantiomeric excess of one anilide over the other.
1974 Science 31 May 943/3 The percent of enantiomeric excess that must be achieved to make an asymmetric synthesis useful varies with each case.
1999 Chem. in Brit. Mar. 32/2 Automated chiral GC methods allowed researchers to determine enantiomeric excesses.
Derivatives
eˌnantioˈmerically adv.
ΚΠ
1947 Jrnl. Amer. Chem. Soc. 69 700/1 A suspension of 216g. (1 mole) of yellow mercuric oxide and 1 mole of a l(+)-lactic acid (85% solution, enantiomerically 96% pure) was shaken in the dark for thirty minutes to complete solution.
2000 W. Cabri & R. Di Fabio From Bench to Market ix. 197 Enantiomerically pure tertiary alcohol.
This is a new entry (OED Third Edition, June 2011; most recently modified version published online March 2022).
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adj.1933