Substitutive Nomenclature

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.

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