A potent 5-HT2 receptor agonist with ocular hypotensive activity; binds to the human and rat 5-HT2 receptors in cerebral cortex homogenates with IC50 values of 1.5 and 0.77 nM, respectively; lowers IOP 25 % at a dose of 100 μg and 33 % at 300 μg at six hours post dose