448184-52-9

N-(2-Aminoethyl)-3-(1,4-dihydro-5-methyl-4-oxo-7-propylimidazo[5,1-f][1,2,4]triazin-2-yl)-4-ethoxybenzenesulfonamide is an intermediate in the synthesis of S-Desethylpiperidino S-[2-Carboxyl-2-oxo-ethyl-(2-aminoethyl)amino] Vardenafil (D290970), which is an impurity of Vardenafil (V098001, 2HCl); a selective phosphodiesterase type 5 (PDE5) inhibitor.