Name Lypressin Synonyms Lysine vasopressin; Vasopressin CAS Registry Number 50-57-7 EINECS 200-050-5 Name Lypressin Synonyms Lysine vasopressin; Vasopressin Molecular Formula C46H65N13O12S2 Molecular Weight 1056.22 CAS Registry Number 50-57-7 EINECS 200-050-5 Lypressin