High affinity, selective agonist of 5-HT6 receptors (Ki values are 13, 168, and 245 nM for human 5-HT6, 5-HT7 and 5-HT2B receptors respectively). Displays moderate affinity for human α2 adrenergic receptors (Ki = 300 nM). Shown to increase Ca2+ concentration and phosphorylation of Fyn kinase, and regulate the activation of ERK1/2 in cloned cells. Purity 98%. MW (observed): 326.78