Sildenafil

1-7-DIMETHYLXANTHINE (1) 1-Methylnicotinamide chloride (1) 1005-24-9 (1) 108347-85-9 (1) 110958-19-5 (1) 1143-70-0 (1) 1163-12-8 (1) 1197-18-8 (1) 120786-18-7 (1) 14783-68-7 (1)