Term: heterocyclic compounds
https://doi.org/10.1351/goldbook.H02798

Definition:
Cyclic compounds having as ring members atoms of at least two different elements, e.g. quinoline, 1,2-thiazole, bicyclo[3.3.1]tetrasiloxane.

Related Terms:
1) carbocyclic compounds (http://doi.org/10.1351/goldbook.C00818).
2) homocyclic compounds (http://doi.org/10.1351/goldbook.H02843).

Source: PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1340 (https://doi.org/10.1351/pac199567081307)

Citation: 'heterocyclic compounds' 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.H02798

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