PF-06649751 is a dopamine D1 and D5 receptor partial agonist.1 It increases locomotor activity and reduces a global parkinsonian disability score in a macaque model of Parkinson's disease induced by MPTP when administered at a dose of 0.04 mg/kg.
1.Young, D., Popiolek, M., Trapa, P., et al.D1 agonist improved movement of parkinsonian nonhuman primates with limited dyskinesia side effectsACS Chem. Neurosci.11(4)560-566(2020)