Saterinone hydrochloride is a phosphodiesterase III (PDE III) inhibitor.
References
[1] Kieback AG, et al. Pharmacokinetics and hemodynamic effects of the phosphodiesterase III inhibitor saterinone in patients with chronic heart failure. Int J Cardiol. 2003 Oct;91(2-3):201-8. DOI:10.1016/s0167-5273(03)00030-5