Nasal Spray
PT-141 Nasal Spray
Bremelanotide (PT-141) nasal spray, 40mg total, 80 sprays at 500mcg per spray.
Est. delivery
PT-141 and Oxytocin are studied within overlapping social-behavior neuroscience circuits.
For research use only — not for human consumption.
Certificate of Analysis
Tested by Freedom Diagnostics · 04/12/2026
Tested by Janoshik · 11/10/2025
Reference Chemistry
Chemical Specification
- CAS #
- 189691-06-3
- Molecular Formula
- M.W.
- 1025.2 g/mol
- HPLC Purity (COA)
- 98.486%
Reference chemistry verified against PubChem. HPLC purity is the most recent reported value from an on-file COA for this product.
RESEARCH USE ONLY — not for human or animal consumption. Not for diagnostic or therapeutic use.
Key Ingredients
A cyclic heptapeptide that activates melanocortin receptors MC3R and MC4R in the central nervous system. Research documents CNS-mediated mechanisms distinct from peripheral vascular pathways.
Discover the researchDescription
PT-141, also known as Bremelanotide, is a synthetic cyclic heptapeptide analog of alpha-melanocyte-stimulating hormone (alpha-MSH). Originally derived from Melanotan 2, PT-141 has been studied for its activity at melanocortin receptors, particularly MC3R and MC4R.
Research Background
Research on PT-141 has centered on melanocortin receptor activation and its downstream effects on the central nervous system. Preclinical studies have explored its selective agonism at MC3R and MC4R subtypes. This product is intended for laboratory research purposes only.
Ingredients & Dosage
| PT-141 (Bremelanotide) | 500 mcg per spray |
Inactive ingredients / formulation base
| Normal Saline (pH 6.0) | Base solution |
| Benzalkonium Chloride (BKC) | 0.01% preservative |
| Lab-Grade Distilled Water | QS |
SKU: PTN0040MG
Shipping & Storage
Shipping: Every order ships 2-Day — free on orders $150+, $4.99 otherwise. Orders placed before 3 PM PT on a business day dispatch the same day, and delivery is typically 2 business days after dispatch.
Storage: Store in a cool, dry place. Refrigeration recommended after opening for optimal stability. Keep away from direct sunlight.
Regulatory Statement
For laboratory and research use only. Not for human or animal consumption. This product is sold exclusively to qualified researchers and licensed laboratories.
This product is not a drug, food, or cosmetic, and is not for diagnostic or therapeutic use. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
A certificate of analysis (COA) is available for this product — view the published COA.
Cyclic Heptapeptide
Melanocortin receptor agonist for CNS pathway research
PT-141 (Bremelanotide) is a synthetic melanocortin receptor agonist derived from Melanotan-2. Unlike other melanocortin peptides, PT-141 acts through central nervous system pathways rather than peripheral vascular mechanisms.
Published Research Data
Quantified findings from peer-reviewed studies on PT-141 (Bremelanotide)
Published Research
Studies on PT-141 (Bremelanotide)
2008 Bremelanotide: an overview of preclinical CNS effects J Sex Med
2003 PT-141: a melanocortin agonist for the treatment of sexual dysfunction Ann N Y Acad Sci
Characterization of PT-141's mechanism of action through melanocortin MC3R/MC4R receptor activation in central nervous system pathways.
Why Research Peptides
All comparisons reflect general industry practices. Stemcode products are intended solely for laboratory research and are not for human consumption.
The Research Standard
All comparisons reflect general industry practices. Stemcode products are intended solely for laboratory research and are not for human consumption.
Frequently Asked Questions
What is PT-141 (Bremelanotide)?
PT-141, also called Bremelanotide, is a synthetic melanocortin peptide and an analogue of alpha-MSH. Unlike vascular-acting compounds it has been investigated for activity at melanocortin receptors in the central nervous system. This product is a 40mg intranasal solution intended for laboratory research use only.
What is in Stemcode's PT-141 nasal spray?
Each bottle contains 40mg of PT-141 total, delivered as 80 sprays at 500mcg per spray. It is third-party lab tested, with results published in its Certificate of Analysis, and ships from within the United States.
Where can I buy PT-141 nasal spray?
PT-141 nasal spray is available to order directly from Stemcode for research use. Every batch is lab tested for purity with a published Certificate of Analysis and ships from within the United States.
How should PT-141 nasal spray be stored?
As a pre-formulated solution, store the nasal spray refrigerated at 2-8°C (36-46°F) and use it within the timeframe indicated on the product label. Keep it away from heat and direct sunlight.
Is PT-141 nasal spray for human use?
No. PT-141 and all Stemcode products are sold strictly for in-vitro laboratory and research use only. They are not for human or animal consumption.
