binding affinities of denopamine and some beta-agonists for rat heart membranes ( kih ) , which contain predominantly the beta 1-subtype , were in the order of isoproterenol ( iso , 14.1 nm ) greater than prenalterol ( 158 ) greater than norepinephrine ( nor , 227 ) greater than or equal to epinephrine ( epi , 248 ) greater than denopamine ( 545 ) greater than or equal to dobutamine ( 645 ) greater than procaterol ( 1440 ) greater than terbutaline ( 6420 ) .
C0028351
norepinephrine
C0014563
epinephrine