AM-855
AM-855 (part of the AM cannabinoid series) is an analgesic drug which is a cannabinoid agonist. It is a derivative of ΔTetrahydrocannabinol with a conformationally restricted side chain which has been bound into a fourth ring fused to the aromatic A-ring of the cannabinoid skeleton. AM-855 is an agonist at both CB and CB with moderate selectivity for CB, with a K of 22.3 nM at CB and 58.6 nM at CB.