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According to the traditional method for naming azo compounds, as described in previous editions of the IUPAC Nomenclature of Organic Chemistry , symmetrical monoazo compounds, , are named by adding the prefix "azo-" to the name of the parent hydride, RH, and unsymmetrical monoazo compounds , are named by placing "-azo-" between the names of the parent hydrides RH and . Unsymmetrical compounds in which the parent hydride, RH, bears a principal characteristic group are named as derivatives of the parent hydride substituted by an organylazo group, . Details of the application of these traditional rules, which are recognized as an acceptable alternative, are given in the 1979 edition of the IUPAC Nomenclature of Organic Chemistry (see Rule C-9.1).

This HTML reproduction is as close as possible to the published version [see IUPAC, Commission on Nomenclature of Organic Chemistry. A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993), 1993, Blackwell Scientific publications, Copyright 1993 IUPAC]. If you need to cite these rules please quote this reference as their source.

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