Sildenafil EP IMpurity C

Name	Desethyl Sildenafil
Synonyms	Desethyl Sildenafil O-Desethyl sildenafil Sildenafil impurity C Sildenafil EP IMpurity C Sildenafil Impurity 3(Sildenafil EP Impurity C) 5-[2-Hydroxy-5-(4-Methylpiperazinylsulphonyl)phenyl]1-Methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyraMidin-7-one 5-[2-Hydroxy-5-(4-methylpiperazinylsulfonyl)phenyl]-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one 5-[2-Hydroxy-5-[[4-(Methyl)-1-piperazinyl]sulfonyl]phenyl]-1,6-dihydro-1-Methyl-3-propyl-7H-pyrazolo[4,3-d]pyriMidin-7-one
CAS	139755-91-2
EINECS	200-659-6

Molecular Formula	C20H26N6O4S
Molar Mass	446.52
Melting Point	>267°C (dec.)
Solubility	Aqueous Base (Slightly), DMSO (Slightly, Heated), Methanol (Slightly, Heated)
Appearance	Solid
Color	White to Off-White
Storage Condition	Refrigerator