Figure 2:

Simplified metabolic pathway of ∆⁹-tetrahydrocannabinol (THC), or ∆¹-tetrahydrocannabinol, under the monoterpenoid naming system, in humans. Both 11-hydroxy- ∆⁹-tetrahydrocannabinol (11-OH-THC), or 7-hydroxy- ∆¹-tetrahydrocannabinol, and 8-hydroxy- ∆⁹-tetrahydrocannabinol (8-OH-THC), or 6-hydroxy- ∆¹-tetrahydrocannabinol, are active metabolites.