This is a blend. PT-141 and Oxytocin are combined in a single 20 mg vial, 10 mg of each. Both act on central nervous system signalling but at unrelated receptors: PT-141, also called bremelanotide, is a ring-shaped seven amino acid peptide that binds the melanocortin receptors MC3R and MC4R, while Oxytocin is a nine amino acid neurohypophysial hormone with an internal disulfide bridge that binds its own receptor, OXTR. The combination has not been characterised as a single formulation.
The numbers that define PT-141 / Oxytocin and how it is being studied. For laboratory research use only.
2
Research Peptides
PT-141 · Oxytocin
20 mg
Total Per Vial
10 mg of each component
MC3R/MC4R
PT-141 Targets
Melanocortin receptors
4
Research Areas
Melanocortin signalling
Neurohormone studies
CNS receptors
How It Works
How PT-141 / Oxytocin works
The pathways PT-141 / Oxytocin acts on - and what each one does. The animation traces its signal outward from the compound to every target it engages.
Signalling pathways studied in preclinical models · illustrative
Melanocortin Receptors
PT-141
PT-141 is a cyclic heptapeptide that binds MC3R and MC4R. Research has measured its activity in the central nervous system rather than in blood vessels, which separates it from other compounds studied in the same area. Its structure derives from Melanotan II.
Cyclic seven amino acid structure
MC3R and MC4R binding
Central rather than vascular activity
OXTR Binding
Oxytocin
Oxytocin is a nine amino acid neurohypophysial hormone closed by a disulfide bridge between residues 1 and 6. It binds the oxytocin receptor OXTR, and social and affiliative behaviour endpoints have been measured in animal models.
Nonapeptide with 1-6 disulfide
OXTR agonist
Behavioural endpoints in animal models
Two Receptor Systems
Combined
The vial pairs a melanocortin agonist with a neurohypophysial hormone. The receptors are unrelated, the two are characterised separately, and no interaction data exists for the pair.
Unrelated receptor systems
Matched handling
Interaction not characterised
Uses & Applications
What PT-141 / Oxytocin is researched for
The main areas PT-141 / Oxytocin is being studied for - and the study-reported figures behind them.
Neuro
Melanocortin Signalling
PT-141 is characterised for MC3R and MC4R activity in central nervous system models.
Endocrine
Neurohormone Studies
Oxytocin is a long-established reference ligand for the OXTR receptor.
Neuro
Receptor Pharmacology
Both peptides are used as receptor-defined tools in binding and signalling assays.
Methods
Parallel Protocols
One vial holds both peptides under matched handling.
Study-reported magnitudes
Representative figures from published research. Bars fill as you scroll.
PT-141 Melanocortin BindingCharacterised
Oxytocin OXTR PharmacologyWell characterised
CNS Signalling EndpointsMeasured
Blend Interaction DataNone
Figures are representative of published research findings and shown for reference.
Molecular Structure
The PT-141 / Oxytocin molecule
An interactive 3D model rendered from the compound record - rotate and explore its structure.
Cys-Tyr-Ile-Gln-Asn-Cys-Pro-Leu-Gly-NH₂, CAS 50-56-6
Form
Lyophilized powder blend
Purity
≥99% by HPLC
Appearance
White to off-white powder
Solubility
Water-soluble
Storage
-20°C, protected from light
Classification
Research use only
FAQ
Common questions about PT-141 / Oxytocin
Both are central nervous system signalling peptides studied in neuroendocrine research, though at unrelated receptors: PT-141 at MC3R and MC4R, Oxytocin at OXTR. One vial holds both under matched handling.
No. The melanocortin receptors and the oxytocin receptor are distinct receptor systems, and no interaction between the two has been characterised.
No. Each peptide is characterised separately and no interaction data exists for the pair.
The standalone PT-141 product lets you control its quantity independently and is offered in its own size. This vial fixes the ratio at 10 mg and 10 mg and adds Oxytocin.
Each lot is analysed by reverse-phase HPLC and released at ≥99%, with a Certificate of Analysis.
Store lyophilized at -20°C for long-term stability, protected from light and moisture, and avoid repeated freeze-thaw cycles.
Research Use Only.
Not for human or veterinary use. For in-vitro laboratory research only. These statements have not been evaluated by the FDA; this product is not intended to diagnose, treat, cure, or prevent any disease. Sold exclusively to qualified researchers and institutions.
