CAS 1971915-89-5
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3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benzenesulfonic acid
CAS:Produto Controlado<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>Fórmula:C19H24N4O5SCor e Forma:White To Off-WhitePeso molecular:420.48
![Ethyl 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonate](/_next/image/?url=https%3A%2Fstatic.cymitquimica.com%2Fproducts%2F86%2Fthumb%2FMM0254.47-0025.jpg&w=3840&q=75)
![3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-ethyl ester Benz…](/_next/image/?url=https%3A%2Fstatic.cymitquimica.com%2Fproducts%2FTR%2Fthumb%2FD414610.jpg&w=3840&q=75)
