Assertion: codeine | /r/HasProperty | extracted
Facets:
value: from opium
type: OTHER
value: directly
type: MANNER
Source sentences:
text: First isolated by French chemist Pierre-Jean Robiquet in 1832, codeine may be extracted directly from opium, but most codeine is produced from morphine, another opium derivative.
text: Codeine can be directly extracted from opium but today, most of the codeine that is used in medications is synthesized from morphine through a process that is known medically and in laboratories as O-methylation.
text: Codeine is extracted from opium.
text: Codeine can also be extracted by using methods such as cod water extraction.
text: While codeine can be extracted from opium, most codeine is synthesized from morphine through the process of O-methylation.