Dipyridamole EP Impurity E

Chemical Name: Dipyridamole USP related compound E; 2,4-Di[di(2-hydroxyethyl)amino]-6,8-di(piperidin-1-yl)-pyrimido[5,4-d]pyrimidine ; 2,2′,2′′,2′′′-[[6,8-di(piperidin-1-yl)pyrimido[5,4-d]pyrimidine-2,4-diyl]dinitrilo]tetraethanol

Synonym: 4-((4,6-dichloropyrimidin-2-yl)oxy)-3,5-dimethylbenzonitrile