Term: singly labelled
https://doi.org/10.1351/goldbook.S05702

Definition:
A specifically labelled compound in which the isotopically substituted molecule has only one isotopically modified atom e.g. CH3–CH[2H]–OH.

Related Terms:
1) specifically labelled (http://doi.org/10.1351/goldbook.S05793).
2) isotopically substituted (http://doi.org/10.1351/goldbook.I03338).
3) isotopically modified (http://doi.org/10.1351/goldbook.I03337).

Source: Blue Book, p. 515 (https://www.acdlabs.com/iupac/nomenclature/)

Citation: 'singly 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.S05702

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