according to the concentrations which caused 20 % of the maximal contraction ( ec20 post ) , the postsynaptic rank order of potency was : adrenaline greater than noradrenaline greater than oxymetazoline greater than naphazoline greater than phenylephrine greater than tramazoline greater than alpha-methylnoradrenaline greater than methoxamine .
C0014563
adrenaline
C0028351
noradrenaline