CAS番号: 139755-83-2 化学式: C22H19N3O4 Molecular Weight: 389.4 Content: 99.5% Sildenafil citrate, Viagra Solubility: 水にわずかに溶ける, methanol; very slightly soluble in ethanol, chloroform Appearance: 白色の結晶性粉末 保管: shading, 密閉保存. 使用法: Viagra (Sildenafil citrate) is a drug used to treat erectile dysfunction (impotence) in males and pulmonary arterial hypertension (PAH).