Mixed labelled

{
  "id": "MLC-T-CHM-007426",
  "term": "Mixed labelled",
  "field": "Chemistry",
  "definition": "Describing a specifically labelled compound whose molecules carry isotopic modification at more than one kind of atom, such as oxygen-18 together with deuterium in the same ethanol molecule. Different elements can be modified, or different nuclides of one element. It differs from a singly labelled compound, where only one kind of atom is modified.",
  "subject": "Inorganic Chemistry",
  "see_also": [
    "isotopically substituted",
    "specifically labelled"
  ],
  "references": [
    "Blue Book, p. 515 (https://www.acdlabs.com/iupac/nomenclature/)",
    "PAC, 1981, 53, 1887. 'Nomenclature of inorganic chemistry: II.1 - Isotopically modified compounds' on page 1893 (https://doi.org/10.1351/pac198153101887)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/mixed-labelled/"
}