10.42 - Groups in which oxygen is replaced by sulfur, selenium, or tellurium have priority, in that descending order, for choice as principal group, after the respective oxygen analogue as indicated in Table C-II. A more detailed order of priority is exemplified for some sulfur derivatives in Table C-XII.
Example to Rule C-10.41
The compound is both an amide and an alcohol. Amides, being derivatives of acids, are higher than alcohols in Table C-II. The amide group is therefore cited as suffix and the hydroxyl group as prefix.
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