the following sympathomimetic amines imitated this effect ( in descending order of potency ) : clonidine greater than or equal to ( - ) -adrenaline greater than or equal to [ ( - ) -noradrenaline ] greater than or equal to dopamine greater than ( - ) -phenylephrine greater than or equal to ( +/- ) -amidephrine .
C0014563
adrenaline
C0028351
noradrenaline