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Characteristic Groups

Principal Group for Citation as Suffix Rule C-10.4

10.41 - Derivative groups have priority for citation as principal group after the respective parents of their general class, as indicated in Table C-II.

Example to Rule C-10.41

The compound is both an amide and an alcohol. Amides, being derivatives of acids, are higher than alcohols in Table C-II. The amide group is therefore cited as suffix and the hydroxyl group as prefix.

10.42 - Groups in which oxygen is replaced by sulfur, selenium, or tellurium have priority, in that descending order, for choice as principal group, after the respective oxygen analogue as indicated in Table C-II. A more detailed order of priority is exemplified for some sulfur derivatives in Table C-XII.

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Principal Group for Citation as Suffix
Rule-10.5

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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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