SDF31: Sildenafil Descarbon Impurity

3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-N-[2-(dimethylamino)ethyl]-4-ethoxy-benzenesulfonamide ;

CAS # 1393816-99-3 ;

C21H30N6O4S ;

Mol. Wt.: 462.57 ;