SDFA7: Sildenafil RC 17

3-(1-Methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-propoxybenzene-1-sulfonyl chloride ;

CAS # 139756-24-4 ;

C18H21ClN4O4S ;
Mol. Wt.: 424.9 ;