Research use only. Not for use in humans or animals. All products and information on this site are provided strictly for in-vitro laboratory research purposes and are supplied as research chemicals only.
PT-141 vs Oxytocin: A Research Peptide Comparison
PT-141 and Oxytocin are sometimes mentioned together, but they are entirely different peptides acting on different receptor systems. This comparison clarifies the distinction — strictly as research chemicals.
Quick comparison
| | PT-141 | Oxytocin |
| --- | --- | --- |
| Also known as | Bremelanotide | Oxytocin |
| Class | Melanocortin-receptor agonist | Nonapeptide hormone |
| Receptor system | Melanocortin (MC receptors) | Oxytocin receptor |
| Research area | Melanocortin-pathway models | Neuroendocrine / social-behavior models |
Different receptor systems entirely
PT-141 (bremelanotide) is a melanocortin-receptor agonist — a synthetic peptide studied at the melanocortin receptors, derived from the same melanocortin lineage as the pigmentation peptides. Oxytocin is a naturally occurring nonapeptide hormone studied at the oxytocin receptor in neuroendocrine and social-behavior research models. The two share no receptor overlap; they are grouped together only because both appear in behavioral-neuroscience literature.
What each is studied for
- PT-141 — melanocortin-pathway signaling in model systems. View the PT-141 product page →
- Oxytocin — oxytocin-receptor and neuroendocrine model research. View the Oxytocin product page →
Sourcing verified material
Both should ship with a lot-specific third-party COA (HPLC purity + mass-spec identity), from US synthesis, with cold-chain shipping. Browse the COA library →
FAQ
What is the difference between PT-141 and Oxytocin?
PT-141 (bremelanotide) is a melanocortin-receptor agonist; Oxytocin is a nonapeptide hormone studied at the oxytocin receptor. They act on entirely different receptor systems and are different classes of peptide.
Are PT-141 and Oxytocin related?
No. They share no receptor system. PT-141 comes from the melanocortin peptide lineage; Oxytocin is a distinct neuroendocrine nonapeptide. They appear together only in behavioral-neuroscience research literature.
Are they research chemicals?
Yes. Both are supplied strictly as research chemicals for laboratory use only, not for use in humans or animals.