VDF61B: Vardenafil O-Desethyl Impurity (Base)

2-(5-(4-Ethylpiperazin-1-ylsulfonyl)-2-hydroxyphenyl)-5-methyl-7-propylimidazo[1,5-f][1,2,4]triazin-4(3H)-one ;

CAS # 2411340-39-9 ;

C21H28N6O4S ;

Mol. Wt.: 460.55 ;