Centrally active dopamine D 1 receptor agonist, selective over D 2 receptor sites. Stimulates adenylate cyclase in rat striatal homogenates with an EC 50 of 125 nM. Unlike SKF 38393 ((-1-Phenyl-2,3,4,5-tetrahydro-(1H)-3-benzazepine-7,8-diol hydrobromide ), it exerts anti-Parkinsonian activity in animal models.
