2,2',2'',2'''-[[4-[(2-Hydroxyethyl)aMino]-8-(1-piperidinyl)pyriMido[5,4-d]pyriMidine-2,6-diyl]dinitrilo]tetrakisethanol (DipyridaMole IMpurity)

2,2'',2'''',2''''''-[[4-[(2-hydroxyethyl)amino]-8-(1-piperidinyl)pyrimido[5,4-d]pyrimidine-2,6-diyl]dinitrilo]tetrakisethanol (Dipyridamole EP Impurity F), is an impurity of Dipyridamole (D492625), which is a selective inhibitor of phosphodiesterase V (PDE 5), a potent coronary vasodilator drug, an adenosine transport inhibitor, and inhibitor of platelet aggregation.

2,2',2'',2'''-[[4-[(2-hydroxyethyl)amino]-8-(1-piperidinyl)pyrimido[5,4-d]pyrimidine-2,6-diyl]dinitrilo]tetrakisethanol, is an impurity of Dipyridamole (D492625), which is a selective inhibitor of phosphodiesterase V (PDE 5), a potent coronary vasodilator drug, an adenosine transport inhibitor, and inhibitor of platelet aggregation.