O-Desethyl Sildenafil

西地那非EP杂质C

Also known as: Desethyl Sildenafil, Sildenafil impurity C, Sildenafil EP Impurity C, O-Desethyl sildenafil, 2TEH1FB1FX, 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, 5-{2-Hydroxy-5-[(4-methyl-1-piperazinyl)sulfonyl]phenyl}-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one, MFCD24386513

O-Desethyl Sildenafil (CAS 139755-91-2) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H26N6O4S and a molecular weight of 446.523 g/mol. It is also known as Desethyl Sildenafil, Sildenafil impurity C and Sildenafil EP Impurity C. Key property: a density of 1.5±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

139755-91-2

Jingsj CID

J-1529130-1

Molecular Formula

C₂₀H₂₆N₆O₄S

Chinese Name

西地那非EP杂质C

Molecular Weight

446.523 g/mol

Category

Organic Compounds

Last updated

8/21/2026