SDF39: Sildenafil Chlorosulfone Impurity

Sildenafil Chlorosulfone ;

Sildenafil Chlorosulfonyl Impurity ;

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazole[4,3-d]pyrimidine-7-one ;

CAS # 139756-22-2 ;

C17H19ClN4O4S ;

MW: 410.88 ;