Term: nonselectively labelled
https://doi.org/10.1351/goldbook.N04202

Definition:
An isotopically labelled compound is designated as nonselectively labelled when the position(s) and the number of the labelling nuclide(s) are both undefined.

Related Terms:
1) isotopically labelled (http://doi.org/10.1351/goldbook.I03336).
2) nuclide(s) (http://doi.org/10.1351/goldbook.N04257).
3) labelling (http://doi.org/10.1351/goldbook.L03425).

Source: Blue Book, p. 517 (https://www.acdlabs.com/iupac/nomenclature/)

Citation: 'nonselectively labelled' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.N04202

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