subunit

https://doi.org/10.1351/goldbook.09017
Largest main-chain (backbone) segment of the constitutional repeating unit (CRU) that can be named a single unit under organic nomenclature rules. This may be a ring or a ring system, a heteroatom or a heteroatom chain, or an acyclic carbon chain.
Source:
PAC, 2021, 93, 963. (Structure-based nomenclature for irregular linear, star, comb, and brush polymers (IUPAC Recommendations 2020)) on page 967 [Terms] [Paper]
Citation: 'subunit' 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.09017 RIS BibTex EndNote
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