ent-Ivabradine Hydrochloride

3,3''-(Propane-1,3-diyl)bis(7,8-dimethoxy-1H-benzo[d]azepin-2(3H)-one) is an impurity of 3,3''-(Propane-1,3-diyl)bis(7,8-dimethoxy-4,5-dihydro-1H-benzo[d]azepin-2(3H)-one) (P760340); an impurity in the synthesis of Ivabradine (I940500) which is a selective bradycardic agent with direct effect on the pacemaker If current of the sinoatrial node. Also antianginal.