Potent and selective CB2 receptor partial agonist (EC50 = 0.65 nM; maximum inhibition = 44.6%). Binds with high affinity to both human and rat CB2 receptors and displays ~ 1200-fold selectivity over CB1 (Ki values are 3.92 and 4772 nM for human recombinant CB2 and CB1 receptors respectively). Produces potent antihyperalgesic effects in several rodent models of pain.