Assertion: brucine | /r/ObjectUse | used for this purpose
Facets:
value: frequently
type: TEMPORAL
Source sentences:
text: Brucine, strychnine, and quinine frequently are used for this purpose because they are readily available, naturally occurring chiral bases.
text: Brucine, strychnine, and quinine frequently are used for this purpose because they are readily available, naturally occurring chiral bases.