Term: constitutional isomerism
https://doi.org/10.1351/goldbook.C01285

Definition:
isomerism between structures differing in constitution and described by different line formulae e.g. CH3OCH3 and CH3CH2OH.

Related Terms:
1) isomerism (http://doi.org/10.1351/goldbook.I03294).
2) constitution (http://doi.org/10.1351/goldbook.C01282).

Source: PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2205 (https://doi.org/10.1351/pac199668122193)

Citation: 'constitutional isomerism' 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.C01285

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