877777-10-1

Sildenafil G Sildenafil Impurity G Sildenafil Impurity 48 Propoxyphenylsildenafi 1 Propoxyphenyl Sildenafil O-Desethyl O-Propyl Sildenafil 1-methyl-5-[5-(4-methylpiperazin-1-yl)sulfonyl-2-propoxyphenyl]-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-7-one 5-[2-propoxy-5-(4-methylpiperazin-1-yl-sulphonyl)phenyl]-1-methyl-3-n-propyl-1,6-dihydro-7h-pyrazol[4,3d]pyrimidin-7-one 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,6-dihydro-1-methyl-5-[5-[(4-methyl-1-piperazinyl)sulfonyl]-2-propoxyphenyl]-3-propyl- Sildenafil Impurity 20/Propoxyphenyl Sildenafil/O-Desethyl O-Propyl Sildenafil/1-Methyl-5-(5-((4-methylpiperazin-1-yl)sulfonyl)-2-propoxyphenyl)-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one