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Characteristic (Functional) Groups
R-3.1.2 Hydro prefixes If the name of the parent hydride implies the presence of the maximum number of noncumulative double bonds (see R-2.4.1), other states of hydrogenation can usually be
indicated by use of the prefix "hydro-" together with an appropriate numerical prefix signifying the addition of hydrogen atoms. This operation is regarded as the reduction of double bonds; thus,
hydrogen atoms can only be added in pairs (by use of "dihydro-", "tetrahydro-", etc.). "Indicated hydrogen" (see R-1.3) is included if required by the parent hydride.
Examples to R-3.1.2
R-3.1.3 Dehydro prefixes
R-3.1.4 Substituent prefix names for unsaturated/saturated parent hydrides
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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