Sildenafil EP Impurity A ; Sildenafil USP RC A ; Sildenafil Isobutyl Analog ; 5-[2-Ethoxy-5-[(4-methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-(2-methylpropyl)-7H-pyrazolo[4,3-d]pyrimidin-7-one

Sildenafil EP Impurity A

Description

Code: JCSDF-13
CAS: 1391053-95-4
Chemical Formula:  C23H32N6O4S
Molecular Weight:488.6
Category: Reference Standards/API Drug Metabolites/EP Impurities/USP Impurities
Literature:
Application: Sildenafil EP Impurity A ; Sildenafil USP RC A ; Sildenafil Isobutyl Analog ; 5-[2-Ethoxy-5-[(4-methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-(2-methylpropyl)-7H-pyrazolo[4,3-d]pyrimidin-7-one is useful as reference Impurity standard.