the rank order of potency of inhibitors of [ 3h ] ( - ) adrenaline binding was oxymetazoline greater than idazoxan congruent to phentolamine congruent to clonidine congruent to ( - ) adrenaline greater than ( - ) noradrenaline greater than yohimbine much much greater than phenylephrine much greater than prazosin greater than ( + ) propranolol .
C0014563
adrenaline
C0028351
noradrenaline