enantiomeric excess

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enantiomeric excess

[ə¦nan·tē·ō¦mer·ik ek′ses]
(organic chemistry)
In an asymmetric synthesis, a chemical yield that contains more of the desired enantiomer than other products.
References in periodicals archive ?
An example of asymmetric synthesis is the generation of allylglcine 10 and other unnatural [varies]-aminoacids via zinc mediated allylation in aqueous media with diastereomeric excess (de) as high as 99:1.