molecular entity Any constitutionally or isotopically distinct atom, molecule, ion, ion pair, radical, radical ion, complex, conformer etc., identifiable as a separately distinguishable entity. CHEBI:23367 chebi_ontology entidad molecular entidades moleculares entite moleculaire molecular entities molecular entity molecular entity molekulare Entitaet We are assuming that every molecular entity has to be completely connected by chemical bonds. This excludes protein complexes, which are comprised of minimally two separate molecular entities. We will follow up with Chebi to ensure this is their understanding as well chemical entity