CAS Number: 139755-83-2 Formulae chemica: C22H19N3O4 pondus hypotheticum: 389.4 Content: 99.5% Sildenafil citrate, Viagra Solubility: Leviter solutum in aqua, methanolum; leviter solutum in ethanol, Aspectus chloroform: White crystallinum pulveris at: obumbrationis, inclusi conservationem. Usage: Viagra (Sildenafil citrate) Est medicamento ad facies Praesent (impotentia) in maribus et arteriosis pulmonis hypertensione (PAH).