L-745870 trihydrochloride is a highly potent and selective D4 dopamine receptor antagonist. L-745870 trihydrochloride exhibits moderate affinity for 5-HT2 receptors, sigma sites and α-adrenoceptors and shows weaker affinity for D2 and D3 receptors.

FIIN-2, an irreversible, pan-FGFR inhibitor, inhibits FGFR1/2/3/4 with IC50 of 3.09 nM, 4.3 nM, 27 nM and 45.3 nM, respectively.

MLS1547 is a highly efficacious agonist of G protein-biased dopamine D2 receptor with a Ki of 1.2 μM. MLS1547 stimulates D2R G protein-mediated signaling with EC50 of 0.37 μM in a calcium mobilization assay.