Assertion: ketamine | /r/HasProperty | synthesized as anaesthetic
Facets:
value: in 1962
type: TEMPORAL
value: following the withdrawal of phencyclidine
type: TEMPORAL
value: in the united states
type: LOCATION
Source sentences:
text: Following the withdrawal of phencyclidine, ketamine was synthesized as an anaesthetic in 1962, patented in 1963 in Belgium and three years later in the United States.