L-902688 is an orally active EP4 receptor agonist (Ki: 0.38 nM; EC50: 0.6 nM). L-902688 displays >4,000-fold selective for EP4 over other EP and prostanoid receptors.
EP4 receptor antagonist 3 is a highly potent and specific inhibitor of the EP4 receptor. It is intended for research purposes in studying EP4 receptor-mediated diseases such as acute and chronic pain, osteoarthritis, rheumatoid arthritis, and cancer.