Locant

{
  "id": "MLC-T-CHM-006743",
  "term": "Locant",
  "field": "Chemistry",
  "definition": "A numeral or letter used in chemical nomenclature to specify the position of a substituent group, functional group, or other structural feature within a molecule or constitutional unit. In polymer nomenclature, locants are used to denote the attachment points of side chains or modifications along the main chain or on a specific monomer unit. For example, in poly(1-chloroethene), the '1' is a locant indicating the position of the chlorine atom.",
  "subject": "Polymer",
  "references": [
    "PAC, 2021, 93, 963. 'Structure-based nomenclature for irregular linear, star, comb, and brush polymers (IUPAC Recommendations 2020)' on page 966 (https://doi.org/10.1515/pac-2020-0103)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/locant/"
}