Sildenafil Impurity 4 (Iso Sildenafil)

Name	Iso Sildenafil
Synonyms	Iso Sildenafil Sildenafil Impurity 66 Sildenafil Impurity 4 (Iso Sildenafil) 1-[[3-(4,7-Dihydro-2-Methyl-7-oxo-3-propyl-2H-pyrazolo[4,3-d]pyriMidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-Methylpiperazi 5-[2-Ethoxy-5-[(4-Methyl-1-piperazinyl)sulfonyl]phenyl]-2,6-dihydro-2-Methyl-3-propyl-7H-pyrazolo[4,3-d]pyriMidin-7-one 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-[2-ethoxy-5-[(4-methyl-1-piperazinyl)sulfonyl]phenyl]-2,6-dihydro-2-methyl-3-propyl-
CAS	253178-46-0

Molecular Formula	C22H30N6O4S
Molar Mass	474.58
Density	1.39±0.1 g/cm3(Predicted)
Melting Point	200-203°C (dec.)
Solubility	Chloroform (Slightly), Methanol (Slightly)
Appearance	Solid
Color	Pale Yellow
pKa	9.82±0.20(Predicted)
Storage Condition	Refrigerator

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