<unk>  is a drug which acts as a dopamine agonist, and is selective for the D4 subtype. It was developed as a possible drug for the treatment of erectile dysfunction, although poor oral bioavailability means alternative drugs such as<unk> -670 may be more likely to be developed commercially. Nonetheless, it continues to be used in scientific research into the function of the D4 receptor.
ABT-724
OSU-6162
MPI-CDG
IVX-411
ALC-0159
VIR-576
HU-308
TA-CD