Potent 5-HT6 receptor agonist (EC50 = 1.0 nM) that displays selectivity over other 5-HT receptors (IC50 values are 7.4, 110, 180, 240, 450, 620, 660 and 3000 nM for 5-HT6, 5-HT1D, 5-HT1B, 5-HT2A, 5-HT2C, 5-HT4, 5-HT1A and 5-HT7 receptors respectively). Shows moderate affinity at 5-HT3 receptors (IC50 = 34 nM).