A selective CB1 receptor agonist exhibiting Ki values of 21.2 nM and >3 µM at the CB1 and CB2 receptors, respectively; more chemically stable than 2-AG, with an endogenous half-life of hours rather than minutes but 10-fold less potent than 2-AG in eliciting typical CB1-mediated responses; elicits modest reductions in IOP in rabbits when administered at doses exceeding 50 µg per eye and increases aqueous humor outflow via the CB1 receptor in the trabecular meshwork.