GSK-598809
GSK-598809 is a selective dopamine D3 receptor antagonist that is or was under development for the treatment of substance-related disorders, smoking withdrawal, and eating disorders like binge eating disorder. The drug is highly selective for the dopamine D3 receptor (Ki = 6.2 nM) over the dopamine D2 receptor (Ki = 740 nM) (~120-fold preference for the D3 receptor over the D2 receptor).