D1/D5 Receptor agonist-1

D1/D5 Receptor agonist-1 is a highly brain-penetrant and orally active D1/D5 receptor agonist. D1/D5 Receptor agonist-1 maintains considerable efficacy in the cAMP pathway and in β-arrestin recruitment, with EC50s of 3.7 nM (D1R cAMP), 91 nM (D1R β-arrestin), 129 nM (D1R internalization) and a Ki of 111 nM (D1R binding affinity). D1/D5 Receptor agonist-1 inhibits β-arrestin signaling in a rat with L-DOPA induced dyskinesias. D1/D5 Receptor agonist-1 can be used for the study of Parkinson’s disease[1].