CP-71,362 (Boc-Phe-His-hexahydroPhe[OH]Leu-Lys-Phe) has been identifie
d as the most potent inhibitor of rat plasma renin (IC50 = 3 nM) and d
og plasma renin (IC50 = 3 pM) to date and thus can be used as an impor
tant experimental tool in the study of the renin angiotensin system in
these established hypertensive models.