Keywords: Sildenafil-CM-3D-balls.png Ball-and-stick model of the sildeanfil molecule based on a the crystal structure of sildenafil citrate monohydrate from http //scripts iucr org/cgi-bin/paper S1600536805002564 Acta Cryst 2005 E61 o489-o491 Image generated in http //www crystalmaker com/ CrystalMaker 8 1 Own 2008-06-05 Ben Mills Benjah-bmm27 Images by Ben Mills Sildenafil |