ACD/Name

Preamble

Numerals 1 (Unity)

A numeral 1 (unity) may be omitted from a name when no ambiguity is caused by so doing. However, in the text below this numeral is included, for consistency, when another numerical locant appears in the same name.


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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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