initial studies involve comparison of the racemic mixture , dl-timolol maleate , with the beta-adrenergic receptor blocking agent propranolol in the rat , dog and cat . dl-timolol maleate is shown to be a potent inhibitor of cardiovascular beta-adrenergic receptors activated by isoproterenol or adrenergic nerve stimulation .
C0087093
timolol maleate
C2757061
inhibitor