Assertion: codeine | /r/ObjectUse | used in the past
Facets:
value: as oxycodone
type: OTHER
value: as dihydrocodeine
type: OTHER
value: as prototype
type: MANNER
Source sentences:
text: Codeine has been used in the past as the starting material and prototype of a large class of mainly mild to moderately strong opioids; such as hydrocodone (1920 in Germany), oxycodone (1916 in Germany), dihydrocodeine (1908 in Germany), and its derivatives such as nicocodeine (1956 in Austria).[citation needed]