Description_x000D_ Amino Acid Sequence_x000D_ Cys-Tyr-Phe-Gln-Asn-Cys-Pro-Lys-Gly-NH2 [Disulfide Bridge: 1-6]_x000D_ Application_x000D_ [Lys8]-Vasopressin was used as a test compound in quantitative analysis of peptides and proteins by using on-line capillary isoelectric focusing-mass spectrometry.The product was used for studying the coupling of a polymer-based microchip electrophoresis to MALDI-TOF MS by using rotating ball interface._x000D_ Packaging_x000D_ 1, 5 mg in serum bottle_x000D_ Biochem/physiol Actions_x000D_ Predominant form of vasopressin present in pigs and marsupials. It has lower vasopressor and antidiuretic activity than Arg8-vasopressin._x000D_ [Lys8]-Vasopressin also refers as Lysine vasopressin or Lyspressin is the predominant form of vasopressin present in pigs and marsupials. It antagonizes the amnesia in rats. Lyspressin can also induce resistance to extinction of active avoidance behaviour._x000D_ Preparation Note_x000D_ 2 mg of [Lys8]-Vasopressin dissolves in 0.1 mL, 0.1M HOAc to yield a clear, colorless solution.