1391053-95-4

Sildenafil A Isobutyl Sildenafi Isobutyl Sildenafil Sildenafil EP IMpurity A Sildenafil Related CoMpound A Isomer of Isobutyl Sildenafil Sildenafil Impurity 1(Sildenafil EP Impurity A) Sildenafil EP Impurity A (Sildenafil USP Related Compound A, Isobutyl Sildenafil) 5-(2-Ethoxy-5-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-1-methyl-3-(2-methylpropyl)-1,6-dihydro-7H-p 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-(2-methylpropyl)-4H-pyrazolo[4,3-d]pyrimidin-7-one (5-(2-ETHOXY-5(4-METHYL PIPERAZINE-1-YL SULFONYL)PHENYL)-1-METHYL-3-PROPYL-6 7- DIHYDRO-1H-PYRAZOLO-4 3-D)PYRIMIDIN-7-ON (5-(2-ETHOXY-5(4-METHYL PIPERAZINE-1-YL SULFONYL)PHENYL)-1-METHYL-3-PROPYL-6 7- DIHYDRO-1H-PYRAZOLO-4 3-D)PYRIMIDIN-7-ONE 5-[2-Ethoxy-5[(4-methylpiperazin-1-yl)sulfonyl]phenyl]-1-methyl-3-(2-methylpropyl)-6,7-dihydro-1H-pyrazol[4,3-d]pyrimidin-7-one 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[(4-methyl-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-(2-methylpropyl)- 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 Impurity 1/Sildenafil EP Impurity A/Isobutyl Sildenafil/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