Parogrelil (hydrochloride) (NM-702) is a phosphodiesterase inhibitor with activity in inhibiting intermittent claudication. Parogrelil (hydrochloride) selectively inhibits PDE3 , inhibits human platelet aggregation in vitro and rat aortic contraction, and improves walking distance and plantar surface temperature in the rat femoral artery ligation model, with better effects than cilostazol.