| Identification | Back Directory | [Name]
Sildenafil impurity | [CAS]
1971915-89-5 | [Synonyms]
Sildenafil-002
SildefilImpurity33
Sildenafil Impurity J
ethyl 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate
3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
Sildenafil impurity 9/
3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid | [Molecular Formula]
C19H24N4O5S | [MOL File]
1971915-89-5.mol | [Molecular Weight]
420.48 |
| Chemical Properties | Back Directory | [Melting point ]
149 - 152°C | [storage temp. ]
Hygroscopic, -20°C Freezer, Under inert atmosphere | [solubility ]
Chloroform (Slightly), Methanol (Slightly) | [form ]
Solid | [color ]
White to Off-White |
| Hazard Information | Back Directory | [Uses]
3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid is used in the preparation of sildenafil impurity for pharmaceutical quality control by esterification. |
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