Enantiomeric excess

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What Wikipedia says

In stereochemistry, enantiomeric excess (ee) is a measurement of purity used for chiral substances. It reflects the degree to which a sample contains one enantiomer in greater amounts than the other. A racemic mixture has an ee of 0%, while a single completely pure enantiomer has an ee of 100%.

Excerpt from the Wikipedia article “Enantiomeric excess”, under the CC BY-SA 4.0 license. Read the article on Wikipedia