UR-144 is a potent synthetic cannabinoid (CB) which preferentially binds the peripheral CB2 receptor (Ki = 1.8 nM) over the central CB1 receptor (Ki = 150 nM). UR-144 N-(5-chloropentyl) analog differs from UR-144 by having a chlorine atom on the terminal carbon of the alkyl group. The biological activities of this compound have not been characterized. This product is intended for forensic and research applications.