locant

https://doi.org/10.1351/goldbook.09014
Numeral or letter or a combination of both that identifies position(s) in a structure.
Note:
A locant appears in a name or general expression such as ‘2-substituted’.
Source:
PAC, 2021, 93, 963. (Structure-based nomenclature for irregular linear, star, comb, and brush polymers (IUPAC Recommendations 2020)) on page 966 [Terms] [Paper]
Citation: 'locant' 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.09014 RIS BibTex EndNote
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