Selective nonpeptide kappa-opiod receptor agonist, which has been found to stimulate the release of adrenocorticotropin (acth) via the release of hypothalmic arginine vasopressin and corticitropin releasing factor.
References:
ML Laorden et al. Effects of U-50,488H and U-50,488H withdrawal on c-fos expression in the rat paraventricular nucleus. Correlation with c-fos in brainstem catecholaminergic neurons. Br. J. Pharmacol. 2003, 138, 1544–1552.
Chemical Name: 2-(3,4-Dichloro-phenyl)-N-methyl-N-(trans-2-pyrrolidin-1-yl-cyclohexyl)-acetamide