Notes: JWH 398 (Item No. 13636) is a synthetic cannabinoid (CB) that acts as an agonist at both the central CB1 receptor and the peripheral CB2 receptor (Kis = 2.3 and 2.8 nM, respectively).{18699} It has been detected as an additive of herbal mixtures.{19508} JWH 398 N-pentanoic acid metabolite is an expected phase I metabolite of JWH 398. The biological and toxicological properties of this compound have not been characterized. This product is intended for forensic and research purposes.