Noun
oxymorphone (uncountable)
(pharmacology) A particular narcotic painkiller.
After N-demethylation of oxymorphone, noroxymorphone is further glucuronidated to noroxymorphone-3-glucuronide. Source: Internet
The major metabolites of oxycodone are noroxycodone (70%), noroxymorphone ("relatively high concentrations"), citation and oxymorphone (5%). Source: Internet