|Appearance:||White to Off-White Solid|
|Storage:||Sealed in dry,Store in freezer, under -20°C|
|Solubility:||DMSO (Slightly), Methanol (Slightly)|
Sildenafil, the first US FDA-approved, oral phosphodiesterase type-5 inhibitor, has revolutionized the treatment of erectile dysfunction sine its approval in 1998. Since sildenafil is a potent inhibitor of cyclic guanosine monophosphate in the corpus cavernosum and therefore increases the penile response to sexual stimulation.