SDFE2: Sildenafil RC 52

5-(2-Ethoxy-5-(2-(4-ethyl-3-oxopiperazin-1-yl)acetyl)phenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one ;

CAS # 1446144-70-2 ;

C25H32N6O4 ;
Mol. Wt.: 480.56 ;