Número CAS: 139755-83-2 Fórmula química: C22H19N3O4 Molecular Weight: 389.4 Content: 99.5% Sildenafil citrate, Viagra Solubility: Ligeramente soluble en agua, methanol; very slightly soluble in ethanol, chloroform Appearance: Almacenamiento de polvo cristalino blanco: shading, conservación confinada. Uso: Viagra (Sildenafil citrate) is a drug used to treat erectile dysfunction (impotence) in males and pulmonary arterial hypertension (PAH).