LY3154207 is a subtype selective, potent, and orally available human dopamine D1 receptor positive allosteric modulator (PAM) with minimal allosteric agonist activity (EC50=3 nM).
Dihydrexidine is a full efficacy D1-like dopamine receptor (D1/D5) agonist (IC50: 10 nM for D1 receptor). It also shows potent antiparkinsonian activity.
PF2562 is a dopamine D1 ligand. It is used as a dopamine D1 agonist or partial agonist. PF2562 binds to human D1 receptor (Ki: 113 nM). PF2562 shows activity against human D1 cAMP (EC50: 568 nM in HTRF assay).