Description
Retatrutide (LY3437943) is a synthetic single-chain peptide under investigation as a triple incretin receptor agonist, targeting the GIP, GLP-1 and glucagon receptors. It is the subject of research into metabolic and body-weight regulation. Researchers interested in the wider Retatrutide 40mg literature can review peer-reviewed studies indexed on PubMed.
Supplied as a high-purity 40mg pen (lyophilised peptide powder), this compound is intended strictly for controlled in-vitro research applications. Every batch undergoes independent third-party analytical testing, including HPLC purity verification and mass spectrometry confirmation. This research peptides range product is available alongside other peptide sizes and combinations.
Compare with Tirzepatide 60mg, Retatrutide 20mg and Semaglutide 5mg. Browse the full research peptides range.
Retatrutide 40mg Research Peptide — Specifications & Quality
United Peptides vs. Typical UK Suppliers
| Category | United Peptides | Typical UK Suppliers |
|---|---|---|
| Purity Verification | HPLC purity verification + mass spectrometry on every batch | Basic HPLC or unverified |
| Documentation | Batch-specific CoA on request (HPLC purity, identity, endotoxin) | Limited or missing |
| Traceability | Consistent batch tracking with CoA linkage | Mixed or unclear sourcing |
| Quality Control | RUO-aligned QC with third-party analytical testing | Non-audited or unverifiable |
| Dispatch | Royal Mail Tracked 24, next working day dispatch | 3–7 day delays |
| Storage Control | Clear storage guidance for lyophilised stability (–20°C) | No monitoring |
Why full spectrum testing matters
- Supports accurate purity and identity confirmation
- Detects heavy metals and endotoxins
- Reduces batch variability and supports research integrity
Specifications
| SKU | RETA-40-UP |
| Form | Lyophilised peptide powder (pen) |
| Purity | ≥98% (HPLC verified) |
| Appearance | White lyophilised powder |
| Size | 40mg per pen |
| Storage | Store at -20°C, protected from light |
| After reconstitution | Store at 2–8°C |
| Testing | Third-party HPLC + mass spectrometry per batch |
Chemical Information
| Molecular Formula | C221H342N46O68 |
| Molecular Weight | ~4731 g/mol |
| CAS Number | 2381089-83-2 |
Research Applications
Retatrutide (LY3437943) is a synthetic single-chain peptide under investigation as a triple incretin receptor agonist, targeting the GIP, GLP-1 and glucagon receptors. It is the subject of research into metabolic and body-weight regulation. Researchers commonly investigate its effects across multiple experimental models.
- Triple incretin receptor (GIP/GLP-1/glucagon) agonist research
- Glucose metabolism and insulin sensitivity studies
- Energy expenditure and fat-mass reduction research
- Body-weight regulation and obesity research
Certificates of Analysis
Batch-specific CoA documentation including HPLC purity, identity confirmation, and endotoxin analysis is available upon request. Contact us for the latest available certificate for this batch. For laboratory research purposes only. Not for human or veterinary use.
Shipping & Delivery
| Delivery method | Royal Mail |
| Free shipping | Free shipping on all orders |
| Delivery timeframe | 1–2 working days (UK) |
Quality & Testing
Third-party tested via independent analytical laboratory, providing batch-specific Certificates of Analysis including HPLC purity verification, identity confirmation, heavy metal screening, and endotoxin analysis. All products carried under controlled cold storage.
FAQs
Is this product supplied with a Certificate of Analysis?
Yes. Batch-specific Certificates of Analysis (CoAs) containing analytical testing data and purity verification are available for this product.
How should this product be stored?
Store lyophilised material at -20°C for long-term stability. After reconstitution, store at 2–8°C.
Is this product for human consumption?
No. This product is supplied strictly for in-vitro laboratory research use only and is not intended for human or veterinary use.
How is delivery handled?
Orders are dispatched by Royal Mail Tracked 24 with next working day dispatch. Free shipping on all orders.
⚠️ Safety & Legal Notice
This product is supplied strictly for in-vitro laboratory research use only and is not intended for human or veterinary use, consumption, administration, or clinical application. Products are not intended for human or veterinary use, administration, consumption, medical treatment, diagnostic procedures, cosmetic application, or any therapeutic purpose. Buyer Responsibility & Compliance: All peptides supplied by United Peptides are clearly labelled “For Research Use Only – Not for Human Consumption” in line with MHRA guidance and industry best practices. You must be 18+, UK-based, and purchasing solely for scientific research. The purchaser is responsible for ensuring compliance with all applicable laws and regulations relating to the handling and use of research materials. For laboratory research purposes only. Not for human or veterinary use.
Disclaimer
By purchasing from United Peptides, you acknowledge and agree to the following terms:
Research Use Only (RUO)
All products supplied by United Peptides are classified strictly as Research Use Only (RUO) materials. They are not intended for human consumption, human or animal administration, medical, therapeutic, or clinical use, diagnostic or veterinary procedures, cosmetic or wellness applications, or any in-vivo use under any circumstances. Products must only be used in controlled laboratory research settings by individuals competent in the safe handling of research chemicals.
Not Medicines or Medical Devices
None of our products should be regarded, described, marketed, repackaged, supplied, or used as medicines, medical devices, injectables, treatments, or food supplements under UK law. United Peptides does not supply products for therapeutic, clinical, or diagnostic purposes.
Buyer Responsibility & Compliance
The purchaser is solely responsible for ensuring the lawful use of all products, for their safe handling, storage, and disposal, and for compliance with all relevant UK regulations, including COSHH and applicable laboratory safety standards. The purchaser is also responsible for verifying that each product is suitable for their intended research application. United Peptides assumes no liability for misuse, improper handling, unsafe storage, unlawful use, or any outcome resulting from applications beyond RUO scope.
No Returns Policy
Due to the specialist and perishable nature of research materials, and in accordance with UK consumer law exemptions for bespoke or sensitive goods, we do not accept returns once a product has been dispatched. Refunds are only available in cases of damage, incorrect supply, or quality issues, as outlined in our Refunds & Returns Policy.
Reviews
There are no reviews yet.