A potent EP2 receptor agonist (IC50s = 10 and 15 nM for human and rat EP2, respectively); selective for EP2 over other EP receptors (IC50s = >3,200 nM for EP1, EP3, and EP4) and a panel of 37 G protein-coupled receptors (≤30% inhibition at a concentration of 10 μM); increases cAMP in HEK293 cells expressing human EP2 (EC50 = 2.8 nM) ,