ORM-3819 is a potent inotropic agent th at binds to cardiac troponin C (cTnC) and sensitizes heart to Ca2+. Also, ORM-3819 is a selective and potent inhibitor of PDE III. ORM-3819 exhibits positive inotropic effects through Ca2+-sensitization and selective inhibition of PDE III. ORM-3819 was effective in vivo dog model of myocardial stunning.
