Term: isotopically modified
https://doi.org/10.1351/goldbook.I03337

Definition:
Describes a compound that has a macroscopic composition such that the isotopic ratio of nuclides for at least one element deviates measurably from that occurring in nature. It is either an isotopically substituted compound or an isotopically labelled compound.

Related Terms:
1) nuclides (http://doi.org/10.1351/goldbook.N04257).
2) isotopically substituted (http://doi.org/10.1351/goldbook.I03338).
3) isotopically labelled (http://doi.org/10.1351/goldbook.I03336).

Source: Blue Book, p. 514 (https://www.acdlabs.com/iupac/nomenclature/)

Citation: 'isotopically modified' 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.I03337

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