20-HETE is an important metabolite of arachidonic acid in the vasculature, especially in the kidney, where it is synthesized by cytochrome P450 (CYP450) enzymes of the 4A family.{6246,12447} Alkylaryl imidazoles have been previously shown to inhibit certain CYP450 enzymes, including the CYP4A enzymes associated with 20-HETE synthesis.{12973} CAY10434 is a selective inhibitor of the 20-HETE synthase CYP4A11 exhibiting an IC50 value of 8.8 nM when tested in human renal microsomes.{11807} CAY10434 is nearly 200 times less potent as an inhibitor of 1A, 1C, and 3A CYP450 enzymes.