O-2545

O-2545 is a drug which is a cannabinoid derivative. It has analgesic effects and is used in scientific research. Unlike most cannabinoids discovered to date, it is water soluble, which gives it considerable advantages over many related drugs. It has high affinity for both CB1 and CB2 receptors, with Ki values of 1.5nM at CB1 and 0.32nM at CB2.