CCG-50014是一種 RGS4 抑制劑，IC50 為 30 nM，對 RGS4 的選擇性比其他 RGS 蛋白高 20 倍。

CCG-63802 is a reversible inhibitor of regulator of G-protein signaling (RGS) protein with greatest potency at RGS4.

CCG 2046 is an inhibitor of regulator of G-protein signaling 4 (RGS4).

CCG-63808 is a reversible inhibitor of regulator of G-protein signaling (RGS) proteins.