THIQ maintains low potency at human MC1R, MC3R and MC5R with IC50s of 2067, 761, 326 nM and EC50s of 2850, 2487, 737 nM, resepectively. THIQ maintains low potency at rat MC3R and MC5R with IC50s 1883 and 1575 nM, and EC50s of 1325 and >3000 nM, respectively.
THIQ (10 μM; 24 hours) decreases the signal intensity of WT MC4R by approximately 50% whereas increases that of three mutants (N62S, C84R, and C271Y) in HEK293 cells.