Notes: JWH 203 (Item No. 9000736) is a synthetic cannabinoid (CB) that displays high affinities for both the central CB1 receptor (Ki = 8.0 nM) and the peripheral CB2 receptor (Ki = 7.0 nM).{17655} JWH 203 N-pentanoic acid metabolite (Item No. 14229) is an expected metabolite of JWH 203, based on the metabolism of similar compounds.{19507} The physiological and toxicological properties of this compound have not been characterized. This product is intended for forensic and research purposes.