Meclofenamate Sodium(CI 583) is a dual COX-1/COX-2 inhibitor with IC50 of 40 nM and 50 nM, respectively, used in the treatment of joint, muscular pain, arthritis and dysmenorrhea. Meclofenamate Sodium is a non-selective gap-junction blocker and a highly selective inhibitor of fat mass and obesity-associated (FTO) enzyme inhibitor.