RK-582 is an orally efficacious spiroindolinone-based tankyrase inhibitor for the treatment of colon cancer. It exhibits a markedly improved robust tumor growth inhibition in a COLO-320DM mouse xenograft model when orally administered.
Naproxen is a COX-1 and COX-2 inhibitor (IC50s: 8.72 and 5.15 μM, respectively in cell assay). Naproxen etemesil is a lipophilic and non-acidic prodrug of naproxen. It is hydrolyzed to pharmacologically active Naproxen once absorbed.