Description_x000D_ Amino Acid Sequence_x000D_ Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Arg-Gly-NH2 [Disulfide Bridge: 1-6]_x000D_ General description_x000D_ Arginine vasopressin is a nonapeptide. It is produced by anterior hypothalamus nerve cells._x000D_ Application_x000D_ [Arg8]-Vasopressin acetate salt has been:_x000D_ • used as a vasopressin receptor agonist to test vasopressin receptors_x000D_ • used to evoke peripheral V1a receptor-mediated vasoconstriction_x000D_ • as a supplement in Ham′s F12/Dulbecco′s modified Eagle′s medium for proximal tubule and glomerular explant cell culture_x000D_ Biochem/physiol Actions_x000D_ Endogenous antidiuretic hormone in most mammalian species. It is released into the blood from nerve terminals in the posterior pituitary and median eminence. Arg8-vasopressin is also a neurotransmitter in the central nervous system. It is implicated in a variety of physiological processes including diuresis, vasoregulation, and memory. Regulates water balance by antidiuretic action; contracts arterioles (vasopressor action)._x000D_ Preparation Note_x000D_ [Arg8]-Vasopressin acetate salt dissolves water at 20 mg/ml to yield a clear colorless to faint yellow solution._x000D_ Other Notes_x000D_ Lyophilized from 0.5% acetic acid