International Union of Pure and Applied Chemistry

Division VIII Chemical Nomenclature and Structure Representation Division

Nomenclature of Organic Chemistry. IUPAC Recommendations and Preferred Names 2013.

Prepared for publication by Henri A. Favre and Warren H. Powell, Royal Society of Chemistry, ISBN 978-0-85404-182-4

Changes to the web Blue Book made since second version was made public on 18 December 2023.

P-16.7.1 (a), line 2.
For ...when followed by a suffix or 'en' ending beginning with 'a', 'e'....
read ...when followed by a suffix or ending beginning with 'a', 'e'....

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