during a 4 min incubation , beta-adrenergic agonists led to a 4 to 6 fold stimulation of cyclic amp concentration with the following order of potency ( kd values ) : zinterol ( 0.75 nm ) greater than hydroxybenzylisoproterenol ( 1.0 nm ) greater than ( -- ) -isoproterenol ( 4.6 nm ) greater than soterenol greater than ( 7.7 nm ) greater than ( -- ) -epinephrine ( 10 nm ) greater than opc 2009 ( procaterol , 11 nm ) much greater than ( -- ) -norepinephrine ( 300 nm ) .
C0014563
epinephrine
C0028351
norepinephrine