Concentration–response curves to (A) Cmpd17b in the presence of DMSO (control), L-NAME (NOS inhibitor), Indo (non-selective COX inhibitor), L-NAME+Indo, or LNAME+Indo+KCaB (inhibitors of KCa3.1 and KCa2.x channels) in the aorta of male mice. Concentration–response curves to Cmpd17b in (B) endothelium intact and endothelium denuded aorta or (C) in the presence of 50mM K+, ODQ (soluble guanylate cyclase inhibitor) or glibenclamide (ATP-sensitive potassium channel blocker). Concentration–response curves to (D) CaCl2 in aorta treated with control (DMSO), Cmpd17b, or nifedipine (calcium channel blocker). * P < 0.05, significantly different to control. Values are expressed as mean ± SEM, n = 3–12 per group. Sensitivity (pEC50), maximum relaxation (Rmax), and maximum constriction (Emax) values are shown in Table 1.