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ChemicalBook--->CAS DataBase List--->1971915-89-5

1971915-89-5

1971915-89-5 Structure

1971915-89-5 Structure
IdentificationBack 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 PropertiesBack 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 InformationBack 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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