the ranking order of inhibition of beta-antagonists or agonists is : dl-propranolol greater than oxprenolol greater than alprenolol greater than pindolol greater than ym-09538 greater than labetalol greater than acebutolol greater than atenolol greater than metoprolol greater than sotalol greater than butoxamine greater than practolol as antagonists or l-isoproterenol greater than l-epinephrine greater than l-norepinephrine as agonists .
C0014563
epinephrine
C0028351
norepinephrine