Assertion: thc | /r/UsedFor | refer to the delta-9-thc isomer
Facets:
value: usually
type: DEGREE
value: with chemical name
type: OTHER
Source sentences:
text: Although the chemical formula for THC (C 21 H 30 O 2 ) describes multiple isomers, the term THC usually refers to the Delta-9-THC isomer with chemical name (−)-trans-Δ⁹-tetrahydrocannabinol.