Isotopomer

{
  "id": "MLC-T-CHM-006259",
  "term": "Isotopomer",
  "field": "Chemistry",
  "definition": "Molecules with identical isotopic content, the same count of each isotope, that differ only in where the isotopic atoms sit; the name contracts isotopic isomer. CH2DCHO and CH3CDO are constitutional isotopomers, and (R)- and (S)-CH3CHDOH are isotopic stereoisomers. Species that differ in the number of isotopic atoms, such as CH3CH2OH and CH3CD2OH, are isotopologues instead.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "isomer",
    "stereoisomers"
  ],
  "references": [
    "PAC, 1994, 66, 1077. 'Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)' on page 1132 (https://doi.org/10.1351/pac199466051077)",
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2211 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/isotopomer/"
}