“The 11-… of three cannabinoids by the microsomes … markedly inhibited by sulfaphenazole , a selective inhibitor of CYP2C enzymes, while the hydroxylations at the 7alpha-(Delta(8)-THC), 8beta-(Delta(9)-THC) … 8-positions (CBN) of the corresponding cannabinoids were highly inhibited by ketoconazole, a selective inhibitor of CYP3A enzymes.”