PT-141 10mg

PT-141 (Bremelanotide) 10mg — synthetic melanocortin research peptide

PT-141, also known as bremelanotide, is a synthetic cyclic heptapeptide studied for its activity at melanocortin receptors, primarily MC4R and MC3R. It is structurally related to Melanotan II and is a common reference compound in research comparing receptor selectivity across the melanocortin family.

Certificate of analysis — current lot on file

• Product: PT-141 10mg
• Laboratory: Freedom Diagnostics (independent third party)
• Accession number: 2607150700
• Reported lot: P41
• Reported purity: 99.78%
• Reported content: 8.19mg
• Report date: July 18, 2026

Verify this report with the lab: open the original Freedom Diagnostics report. It is also listed on the SBR Labs Certificates of Analysis page. To check the identity, lot, and purity fields yourself, see how to read a peptide certificate of analysis and how to verify peptide purity reports.

For laboratory research use only. Not for human or animal consumption.

Product specifications

• Class: synthetic cyclic melanocortin receptor agonist peptide
• Amount per vial: 10mg lyophilized powder
• Physical form: lyophilized white to off-white powder, sealed against light and moisture
• Documentation: current-lot third-party report on file (see above)

Why PT-141 is used as a reference compound

Because PT-141 shows a narrower receptor profile than Melanotan II, researchers use the two side by side to separate MC4R- and MC3R-mediated signaling from MC1R-mediated activity in receptor-binding and cell-signaling work.

Preclinical research areas

• MC3R and MC4R receptor-binding and selectivity assays
• Central melanocortin signaling pathways in animal models
• Downstream cAMP signaling in receptor-expressing cell lines
• Comparative receptor pharmacology versus Melanotan II

Handling and storage

• Store the sealed lyophilized vial at or below −18 °C, protected from light and moisture
• Reconstitute with bacteriostatic water or sterile water per your laboratory SOP
• After reconstitution, refrigerate at 2–8 °C and aliquot to limit freeze-thaw cycles
• Record lot number, reconstitution date, and solvent for reproducibility
• See the full SBR Labs handling & storage reference

Related research materials

• MT-2 (Melanotan II Acetate) 10mg — broader melanocortin agonist for comparative work
• KPV 10mg — α-MSH-derived tripeptide fragment
• Bacteriostatic Water 10ml — diluent for reconstitution

For Laboratory Research Use Only. Not for human or veterinary use. Not a drug, dietary supplement, or cosmetic. Not intended to diagnose, treat, cure, or prevent any disease. Keep out of reach of children. By purchasing, you certify that you are a qualified researcher or research institution acquiring this product solely for laboratory research, and that you accept sole responsibility for compliance with all applicable local, state, and federal laws and regulations.