Prasugrel Impurity 4 HCl

5-(5-Chloro-1-(2-fluorophenyl)-2-oxopentyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridin-2-yl Acetate Hydrochloride is an impurity of Prasugrel Hydrochloride (P701150), which is a novel antiplatelet agent; it is a third-generation thienopyridine.