Enantiomeric excess

{
  "id": "MLC-T-CHM-003862",
  "term": "Enantiomeric excess",
  "field": "Chemistry",
  "definition": "A measure of the purity of a chiral substance, indicating the excess of one enantiomer over the other in a mixture. It is calculated as the absolute difference between the mole fractions of the two enantiomers, expressed as a percentage. A value of 100% indicates a pure enantiomer.",
  "synonyms": [
    "enantiomer excess"
  ],
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "enantiomer",
    "mole",
    "optical purity",
    "weight"
  ],
  "references": [
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2207 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/enantiomeric-excess/"
}