n-methyldopamine ( epinine ) , one of the few modifications of the dopamine ( da ) molecule that retains agonist activity at the da1 receptor , was administered orally as the diisobutyric ester , ibopamine ( 100 , 200 , and 300 mg ) , to 15 patients with congestive heart failure .
C0011498
methyldopamine
C0013030
dopamine