Assertion: opium's morphine | /r/HasProperty | precursor
Facets:
value: in the manufacture
type: LOCATION
Source sentences:
text: Morphine is a precursor in the manufacture in a number of opioids such as dihydromorphine, hydromorphone, hydrocodone, and oxycodone as well as codeine, which itself has a large family of semi-synthetic derivatives.[citation needed]
text: Morphine is still the precursor to all other opioids, including prescription narcotic painkillers such as codeine, fentanyl, methadone, hydrocodone (Vicodin), hydromorphone (Dilaudid), meperidine (Demerol) and oxycodone (Percocet or Oxycontin).