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(Science: chemical) Cys-tyr-phe-gln-asn-cys-pro-arg-gly-nh2, cyclic 1-6 disulfide. The usual mammalian antidiuretic hormone, it is a cyclic nonapeptide with arginine in position 8 of the chain. Argipressin is used to treat diabetes insipidus and as haemostatic because of its vasoconstrictor action.

Pharmacological action: haemostatics, renal agents, vasoconstrictor agents.

chemical name: vasopressin, 8-L-arginine-