the observed order of potency of adrenergic agonists ( kd values ) in competing for [ 125i ] cyp binding was : ( - ) isoproterenol ( 25 nm ) greater than ( - ) epinephrine ( 74 nm ) much greater than ( - ) norepinephrine ( 1900 nm ) .
C0014563
epinephrine
C0028351
norepinephrine