Product Name: V'ardenafil
CAS NO.: 224789 15 5
Molecular Formula: C23H32N6O4S
Appearance: White to almost white crystalline powder, odorless, a little acerbity,soluble in water, ethano
Use: It is pharmaceutical raw material, indicated for the treatment of erectile dysfunction.

V'ardenafil is a PDE5 inhibitor used for treating erectile dysfunction. V'ardenafil's indications and contra-indications are the same as with other PDE5 inhibitors; it is closely related in function to S'ildenafil citrate () and T'adalafil (Cialis). The difference between the V'ardenafil molecule and S'ildenafil citrate is that a nitrogen atom has different position and the change of S'ildenafil's piperazin ring methyl group to an ethyl group. T'adalafil is structurally different from both S'ildenafil and V'ardenafil. Va'rdenafil's relatively short effective time is comparable to but somewhat longer than S'ildenafil's.

Further, V'ardenafil lengthens QT interval. Therefore it should not be taken by men taking other medications that affect the QT interval (such as A miodarone).

Beyond its indications for erectile dysfunction, v'ardenafil may be effective in the treatment of premature ejaculation, where it may significantly increase the time from vaginal penetration to ejaculation.

V'ardenafil, as with all PDE5 inhibitors, should not be used by men taking nitrate medications, because combining them with v'ardenafil might provoke potentially life-threatening hypotension (low blood pressure).

Further, V'ardenafil causing lengthening of the QT interval. Therefore it should not be taken by men taking other medications that affect the QT interval (such as a miodarone).