Description_x000D_ Amino Acid Sequence_x000D_ Mpa-Tyr-Phe-Val-Asn-Cys-Pro-Arg-Gly-NH2_x000D_ Application_x000D_ [Deamino-Cys1, Val4, D-Arg8]-Vasopressin was used to prepare sample for qualitative detection of desmopressin in plasma by using liquid chromatography-electrospray tandem mass spectrometry._x000D_ Packaging_x000D_ 1 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ [Deamino-Pen1, O-Me-Tyr2, Arg8]-Vasopressin is a V1 antagonist that stabilizes the cardiocirculatory function in normal human as well as in patients suffering from catecholamine-resistant vasodilatory shock.It can also stimulate three acid-base transporters and hence increases the capability of the cell to regulate pHi._x000D_ Preparation Note_x000D_ [deamino-Cys1, Val4, D-Arg8]-Vasopressin dissolves in water at 1 mg/ml to yield a clear, colorless solution.