Erectile Dysfunction TreatmentMale Enhancement Hormones Sex Hormones Powders Performance Enhancing DrugsVardenafil CAS: 224785-91-5 Molecular Formula: C23H32N6O4SMolecular weight: 488.604Assay: 99% min.Loss of drying: ≤1.0%Melting Point: 191.0~193.0oCHeavy Metal: ≤20ppmPacking: foil bag or tin.Delivery: Express courier.Appearance: White to almost white crystalline powder, odorless, a little acerbity,soluble in water, ethanol Descriptions:Vardenafil (INN) is a PDE5 inhibitor used for treating erectile dysfunction. Vardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis). The difference between the vardenafil molecule and sildenafil citrate is a nitrogen atom's position and the change of sildenafil's piperazine ring methyl group to an ethyl group. Tadalafil is structurally different from both sildenafil and vardenafil. Vardenafil's relatively short effective time is comparable to but somewhat longer than sildenafil's.Use: It is pharmaceutical raw material, indicated for the treatment of erectile dysfunction.Standard: Enterprise Standard