(D-Arg8) -Inotocin

(D-Arg8) -Inotocin is a highly potent and selective competitive antagonist of the vasopressin V1a receptor, with a Ki of 1.3 nM and >3000-fold selectivity over related receptors. It is a valuable research tool for investigating the physiological and pathological roles of V1aR signaling in both in vitro binding assays and in vivo animal studies.