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Seniority of Chains Rule C-13.2 13.21 - For choice of the principal chain, an acid is normally named by method (a) of Rule C-11.11 (-oic name) or an
existing trivial name is used, unless use of the ending carboxylic acid (method (b) of Rule C-11.11) leads to citation of a larger number of carboxyl groups as ending of the name.
Examples to Rule C-13.21
Seniority of Chains Rule C-13.3
This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the
published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979.
Copyright 1979 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