CAS 1971915-89-5
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Ethyl 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate
CAS:Color and Shape:Neat3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
CAS:Controlled Product<p>Applications 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.<br>References Xu, G., et al.: Faming Zhuanli Shenqing (2016), CN 105753870 A 20160713<br></p>Formula:C19H24N4O5SColor and Shape:White To Off-WhiteMolecular weight:420.48
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