in terms of adenylate cyclase activation , three full agonists ( isoproterenol , epinephrine , and norepinephrine ) , four partial agonists ( procaterol , salbutamol , fenoterol , and zinterol ) , and four antagonists ( propranolol , metoprolol , atenolol , and practolol ) were tested .
C0014563
epinephrine
C0028351
norepinephrine