PDE4 inhibitor PDE9 CC-1088 Phosphodiesterase inhibitor PDE10 PDE3 inhibitor PDE11 Irsogladine Filaminast Arofylline EHNA Piclamilast 8-Methoxymethyl-3-isobutyl-1-methylxanthine HT-0712 Quazinone BRL-50481 Moxaverine Trapidil Siguazodan Zaprinast Doxofylline Cilomilast Homosildenafil Zardaverine Ibudilast Mardepodect YM-976 Enoximone SCH-51866 BAY 73-6691 Furafylline Milrinone Pentifylline Rolipram Papaverine Trequinsin Sulfoaildenafil Acetildenafil Vinpocetine Nitrosoprodenafil ICI-63197 Mirodenafil KMUP-1 Udenafil Aildenafil Atizoram Amrinone Ensifentrine Avanafil Bucladesine MY-5445 Pimobendan Discovery and development of phosphodiesterase 5 inhibitors Cilostamide Aprem…

milast Tadalafil T-0156 Tofisopam Crisaborole Roflumilast Finasteride/tadalafil Lodenafil Vesnarinone PDE5 inhibitor Anagrelide Dipropylcyclopentylxanthine Enprofylline Icariin Pentoxifylline Vardenafil Dipyridamole Aminophylline Proxyphylline Propentofylline Mesembrenone Choline theophyllinate Mesembrine IBMX Theobromine Sildenafil Cartazolate Etazolate 8-Cyclopentyl-1,3-dimethylxanthine Theophylline Tracazolate Diprophylline Paraxanthine Glaucine Caffeine