specific binding of 3h-wb-4101 was rapid , saturable , and exhibited the alpha-adrenergic agonist potency order of ( - ) -epinephrine inhibition constant [ ki ] = 0.6 mumol/l greater than ( - ) -norepinephrine ( ki = 1.5 mumol/l ) much greater than ( - ) -isoproterenol ( ki = 120 mumol/l ) .
C0014563
epinephrine
C0028351
norepinephrine