An illustrative list in increasing order of precedence following each column downward in turn for choice as the principal component in fusion nomenclature (see Rule A-21.2 , in IUPAC Nomenclature of Organic Chemistry).

Note that there are names in this list that do not appear in Table 20.

This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.

Published with permission of the IUPAC by Advanced Chemistry Development, Inc.,, +1(416)368-3435 tel, +1(416)368-5596 fax. For comments or suggestions please contact