PT-141

Research Use OnlyBremelanotideVyleesiAc-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-OHCAS: 189691-06-3

A 7-amino acid cyclic peptide analog of alpha-MSH that activates melanocortin receptors MC3R and MC4R, FDA-approved for hypoactive sexual desire disorder and studied for sexual function in clinical research. Premium Research Peptide.

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Verified Test Results

Every batch, independently verified.

Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory. The report below reflects the identity, purity and full-panel specification data released with this product.

ILSILS Laboratories

Certificate of Analysis

99%

Purity by HPLC

ISO 17025 Accredited8× Tested
ParameterResultSpecification
AppearanceGoodMeets spec
Purity99.91% · Pass≥ 95%
Net Peptide Content10.61mgReport
IdentityConfirmedMeets spec
Fentanyl ScreenNot DetectedPass
Heavy MetalsNot DetectedPass
SterilityNo GrowthPass
Endotoxin< 0.05 EU/mLReported

Representative report from lot PT0002 (PT-141). Your order ships with its own lot-specific certificate.

View this batch's certificate

Third-party verified

Certificate of Analysis

Every lot is HPLC-tested at an ISO/IEC 17025-accredited lab. Open any batch's certificate below.

PT-141 10mg

Latest

LOT PT0002

99.91%

HPLC purity · meets spec

Labeled
10mg
Measured
10.61mg
Identity
Confirmed
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
< 0.05 EU/mL
Tested
Jul 30, 2026

8 assays passed · ISO/IEC 17025 accredited

View certificate

PT-141 10mg

LOT PT0001

99.62%

HPLC purity · meets spec

Labeled
10mg
Measured
10.61mg
Identity
PT-141
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
< 0.05 EU/mL
Tested
May 29, 2026

7 assays passed · ISO/IEC 17025 accredited

View certificate

Compound Information

Technical specifications

Molecular Profile

What Is PT-141?

Cyclic heptapeptide analog of alpha-MSH, active metabolite of Melanotan II

Cyclic PeptideFDA Approved
TypeCyclic heptapeptide
CAS Number189691-06-3
Molecular FormulaC50H68N14O10
Molecular Weight1025.2 g/mol
Amino Acids7 residues
SequenceAc-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-OH
PubChem Database
Storage Requirements

Stability Information

Handle with care to maintain potency

Light sensitiveRefrigerate
Lyophilized (powder)
2-8°Cprotect from light
Reconstituted
2-8°C
Auto-injector (Vyleesi)
Room temperature
Development Status

Regulatory Information

Developed by Palatin Technologies, approved by FDA

DeveloperPalatin Technologies
MarketingAMAG Pharmaceuticals
FDA ApprovalJune 21, 2019
Trade NameVyleesi
IndicationHSDD in premenopausal women
Male UseNot approved (research only)
FDA Approval Letter

Important Research Notice

Not for human consumption. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.

All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.

By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.

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