Sildenafil impurity Chemical Properties

Melting point:

149 - 152°C

Boiling point:

624.0±65.0 °C(Predicted)

Density 

1.37±0.1 g/cm3(Predicted)

storage temp. 

Hygroscopic, -20°C Freezer, Under inert atmosphere

solubility 

Chloroform (Slightly), Methanol (Slightly)

form 

Solid

pka

0.36±0.20(Predicted)

color 

White to Off-White

Sildenafil impurity Usage And Synthesis

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.

Sildenafil impurity(1971915-89-5)Related Product Information

• 4-Amino-2-methyl-5-propyl-2H-pyrazole-3-carboxylic acid
• 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 5-(5-chloro-2-ethoxyphenyl)-1,6-dihydro-1-methyl-3-propyl-
• Sildenafil EP IMpurity D
• Propoxyphenyl Sildenafil
• DESMETHYL SILDENAFIL
• Homo Sildenafil
• Sildenafil DiMer IMpurity
• SILDENAFIL N-OXIDE
• 7H-Pyrazolo[4,3-d]pyrimidin-7-one, 1,6-dihydro-5-(2-hydroxyphenyl)-1-methyl-3-propyl-
• 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonamide
• 1-Methyl-4-nitro-3-propyl-(1H)-pyrazole-5-carboxamide
• 5-[2-Ethoxy-5-[(4-Methyl-4-oxido-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-Methyl-3-(2-Methylpropyl)-7H-pyrazolo[4,3-d]pyriMidin-7-one
• Desethyl Sildenafil
• 1-METHYL-4-NITRO-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID
• 1H-PYRAZOLE-5-CARBOXAMIDE, 4-[[2-ETHOXY-5-[(4-METHYL-1-PIPERAZINYL)SULFONYL]BENZOYL]AMINO]-1-METHYL-3-PROPYL-
• 1-Piperazinesulfonicacid,4-methyl-(9CI)
• 2-ETHOXY-5-[(4-METHYLPIPERAZIN-1-YL)SULFONYL]BENZOIC ACID
• 5-CHLOROSULFONYL-2-ETHOXYBENZOIC ACID