Additive Nomenclature

Rule C-34

34.1 - The use of the prefix "homo-" to denote incorporation of CH2 as an additional member into a ring is described in Steroid Rules 2S-7.1 and 2S-7.3. Use of the prefix "seco-" to denote ring fission, with addition of a hydrogen atom at each terminal group thus created, is described in Rule 2S-8.1. Wherever feasible, however, systematic names are preferred; for example (3,4-methylenedioxyphenyl)acetic acid is preferred to homopiperonylic acid.

See Recommendations'93 R-1.2.3

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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