Occasionally, an author may wish to convey a particular emphasis by assigning a name which departs from standard priority considerations. So long as this is adequately explained and appropriate
consequences (e.g., for numbering) accepted and logically treated so as to preserve freedom from error and ambiguity, this set of procedures may still be applicable. However, names so generated are
not recommended for general use.
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., www.acdlabs.com, +1(416)368-3435 tel, +1(416)368-5596 fax. For comments or suggestions please contact firstname.lastname@example.org