UDF54: Udenafil Sulfonic Acid Impurity

3-(1-Methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-propoxybenzenesulfonic acid ;

C18H22N4O5S ;
Mol. Wt.: 406.46 ;