Small molecule

{
  "id": "MLC-T-CHM-010948",
  "term": "Small molecule",
  "field": "Chemistry",
  "definition": "A molecule of low relative molecular mass whose structure is not composed of multiple repeating constitutional units. In contrast to a macromolecule, the addition or removal of one or a few atoms from a small molecule alters its chemical and physical properties. The conceptual dividing line is whether the properties are a function of the entire structure or an average over many repeating units.",
  "subject": "Polymer",
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 107 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/small-molecule/"
}