dissociation of ( - ) - [ 3h ] dihydroalprenolol bound under conditions yielding approximately 20 % initial occupancy was performed in the absence and in the presence of a large molar excess of beta-adrenergic agonist ( ( - ) -isoproterenol ) or beta-adrenergic antagonist ( ( - ) -alprenolol or ( - ) -propanalol ) .
C0012278
dihydroalprenolol
C0002334
alprenolol