the ic50 values ( nm concentrations inhibiting specific binding by 50 % ) were 0.9 for ( +/- ) -n-propyl-norapomorphine , 3.0 for dopamine , 7 for ( -- ) -adrenaline , 60 for ( -- ) -noradrenaline and 4000 for isoproterenol , a series of potencies compatible with properties for a dopaminergic site .
C0014563
adrenaline
C0028351
noradrenaline