R-4.2.1

Examples to R-4.2.1

and

Principal group: -ol

Parent hydride: Ethane

Parent hydride + one principal group: Ethanol

Parent hydride +
two principal groups: Ethane-1,2-diol

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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	and

Principal group:		-ol
Parent hydride:		Ethane
Parent hydride + one principal group:		Ethanol
Parent hydride + two principal groups:		Ethane-1,2-diol