p93b

In previous editions of the IUPAC Nomenclature of Organic Chemistry

, substituent prefix names for

and

were formed by adding "thio" or "seleno" to the substituent prefix name for the group R.

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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