Potent, selective 5-HT 1F receptor agonist (EC 50 = 3 nM). Displays > 80-fold selectivity over other 5-HT receptors (K i values are 0.006, 0.53, 0.55, 0.56, 1.42, 1.70, 3.50, 3.94 and 4.85 μ M for 5-HT 1F , 5-HT 1A , 5-HT 1B , 5-HT 1D , 5-HT 1E , 5-HT 2B , 5-HT 2C , 5-HT 2A and 5-HT 7 receptors respectively). Inhibits neurogenic dural inflammation in vivo following i.v. and oral administration.
