Tetrahydrocannabivarin (
THCV,
THV) is a
homologue of
tetrahydrocannabinol (THC) having a propyl (3-carbon) side chain instead of a pentyl (5-carbon) group on the molecule, which makes it produce very different effects from THC. This terpeno-phenolic compound is found naturally in
Cannabis, sometimes in significant amounts. The psychoactive effects of THCV in
Cannabis preparations are not well characterized.