• Name
  • Description
  • Cat#
  • Pricings
  • Quantity
  • Ornipressin

  • Ornipressin
  • HOR-036
  • Shipped at Room temp.

Catalogue number



Ornipressin Synthetic is a single, non-glycosylated polypeptide chain containing 9 amino acids, having a molecular mass of 1042.19  Dalton and a Molecular formula of C45H63N13O12 S2.

Physical Appearance

Sterile Filtered White lyophilized (freeze-dried) powder.


The protein was lyophilized with no additives.       


It is recommended to reconstitute the lyophilized Ornipressin in sterile 18MΩ-cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions.


Lyophilized Ornipressin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Ornipressin should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).

Please prevent freeze-thaw cycles.


Greater than 97.0% as determined by analysis by RP-HPLC.

Amino acid sequence


Safety Data Sheet


ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.


Ornipressin, a naturally occurring non-mammalian vasopressin analogue, has been recognized for its role in vasoconstriction and antidiuresis, making it an invaluable agent in certain clinical settings (Holmes et al., 2003). This paper aims to comprehensively review ornipressin's biochemical properties, its clinical applications, and potential future directions for therapeutic use.

Ornipressin is characterized by its strong vasopressin V1 receptor agonist activity, resulting in intense vasoconstriction. It also exhibits antidiuretic properties through the activation of V2 receptors in the renal collecting ducts, albeit to a lesser extent compared to vasopressin (Evans & Davidson, 1964).

Clinical applications of ornipressin are mainly driven by its potent vasoconstrictor activity. It has shown promise in managing esophageal variceal bleeding, where its vasoconstrictive properties help achieve hemostasis (Bosch et al., 2004).

Furthermore, it has been used as a rescue therapy in vasodilatory shock, where traditional vasoconstrictors may have limited effect (Morelli et al., 2005).
As our understanding of ornipressin continues to expand, future research is directed toward fine-tuning its application in various clinical scenarios and exploring potential new therapeutic roles. Current research is investigating the possible neuroprotective role of ornipressin in conditions such as cerebral ischemia (Uchida et al., 2010).

Ornipressin, with its robust vasoconstrictor and antidiuretic properties, plays a crucial role in managing certain clinical situations. As we continue to explore this intriguing compound, its therapeutic potential appears to be far-reaching, warranting continued research in this field

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