Vitality
PT-141 / Oxytocin
Peptide blend
PT-141 and Oxytocin blend
Research context
This preparation combines PT-141, a melanocortin receptor agonist, with oxytocin, a nonapeptide acting at the oxytocin receptor. The two act at unrelated receptor systems. Each component is characterised independently in the literature.
Common assays: Component identity by LC-MS · Purity per component
Specification
| Designation | Peptide blend |
|---|---|
| Full name | PT-141 and Oxytocin blend |
| Components | PT-141 (Bremelanotide) · Oxytocin |
| Formats | 10 mL Vial · 15 mL Advanced Liquid Peptide Spray |
| Solubility | Vial: bacteriostatic water, sterile water. Spray: supplied in metered spray format. |
| Storage | Vial, lyophilised: −20 °C. Spray: refrigerated 2–8 °C, protected from light. |
| Current lot | PT105N0526 → |
PT-141 / Oxytocin COA: certificates of analysis by lot
2 lots of PT-141 / Oxytocin have a published certificate of analysis from AxisPharm, LLC, an independent laboratory. Each certificate reports the laboratory's results for that lot.
| Lot | Format | Purity (HPLC-UV) | Reported |
|---|---|---|---|
| PT105N0526 | 10 / 5 mg Spray | 99.1% | 2026-05-27 |
| PO510N1125 | 5 mg / 10 mg Spray | >99.0% | 2025-11-20 |
Common questions
How is a two-component blend verified?
Each component is identified and quantified separately by LC-MS and RP-HPLC, with results reported per component on the certificate.
Where can I see the PT-141 / Oxytocin certificate of analysis?
Every published PT-141 / Oxytocin lot has its own certificate page on this site, listed under "PT-141 / Oxytocin COA" above. There are 2 published lots; the most recent, lot PT105N0526, was reported on 2026-05-27 at 99.1% purity by HPLC-UV. The certificates are issued by AxisPharm, LLC, an independent laboratory.
Components, blends and pathway
Related compounds
PT-141
Bremelanotide
A cyclic heptapeptide melanocortin receptor agonist studied in MC3R and MC4R signalling.
Oxytocin
Oxytocin
A cyclic nonapeptide hormone studied in receptor signalling and social neuroscience research.
Melanotan II
Melanotan-II
A cyclic α-MSH analogue studied as a non-selective melanocortin receptor agonist.
Kisspeptin
KISS1-derived peptide
A decapeptide fragment of the KISS1 gene product, studied in GnRH neuron signalling.