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Preamble

Terminal Characteristic Groups

Prefixes that represent complete terminal characteristic groups are preferred to those representing only a portion of a given group.

Examples: Cf. Rule
3-(Formylmethyl)heptanedial preferred to
3-(2-Oxoethyl)heptanedial C-303.3
7-Thioformylheptanoic acid preferred to
8-Thioxooctanoic acid C-531.3

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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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