Retatrutide UK: Research-Grade, Independently Purity-Tested
Retatrutide (LY3437943) is a triple-agonist research peptide targeting the GLP-1, GIP and glucagon receptors. Sterling Peptides supplies retatrutide from UK-held stock in 10mg, 20mg and 40mg vials, with every batch independently tested for purity by Janoshik, for laboratory research use only.
For in vitro research use only. Not for human or animal use. Nothing on this page is medical advice.
Available sizes
All sizes are supplied as lyophilised powder in sealed vials and ordered through our official store, sterling-research.com.
About retatrutide
Retatrutide is a synthetic peptide studied as a single molecule that activates three receptors involved in metabolic signalling: GLP-1, GIP and glucagon. This “triple agonist” design sets it apart from earlier compounds that target one or two of these receptors.
Researchers use retatrutide in controlled laboratory settings to investigate receptor binding, signalling pathways and metabolic activity. For a detailed look at its mechanism and the published research, see our retatrutide research guide.
Specifications
| Name | Retatrutide |
|---|---|
| Research code | LY3437943 |
| Class | GLP-1 / GIP / glucagon receptor triple agonist |
| Molecular weight | ≈ 4731 g/mol |
| CAS number | 2381089-83-2 |
| Form | Lyophilised (freeze-dried) powder |
| Purity testing | HPLC, independent third-party lab (Janoshik) |
| Sizes | 10mg, 20mg, 40mg |
Why researchers choose Sterling
- Independent purity testingEvery batch is tested for purity by Janoshik using HPLC before it is listed for sale.
- UK-held stockStock is held in the UK for fast dispatch to research labs and institutions.
- Three sizes10mg, 20mg and 40mg vials to match the scale of your research.
- Clear research informationPublished guides on chemistry, mechanism and lab handling for every compound we supply.
Independent purity testing
Every batch of retatrutide sold by Sterling Peptides is tested by Janoshik, an independent third-party laboratory, before it is listed for sale. Purity is measured by HPLC. Read more about our process on the Quality & Testing page.
Storage and shipping
- Store lyophilised vials in a cool, dry place away from light; refrigeration (2–8 °C) or freezing extends shelf life.
- Avoid repeated temperature changes and moisture exposure.
- Orders are dispatched from UK stock in protective packaging.
Research use only
Retatrutide is an investigational compound and is not approved as a medicine in the UK. Our retatrutide is supplied strictly for laboratory and scientific research. It is not for human or animal use, and we do not provide dosing or usage advice.
Further reading
Frequently asked questions
Where can I buy retatrutide in the UK for research?
Sterling Peptides supplies retatrutide for laboratory research in 10mg, 20mg and 40mg vials through our official store, sterling-research.com, with UK-held stock.
How is your retatrutide tested?
Every batch is tested for purity by Janoshik, an independent third-party laboratory, using HPLC before it is listed for sale.
What sizes are available?
Retatrutide is available in 10mg, 20mg and 40mg vials, supplied as lyophilised powder.
Is retatrutide approved for human use?
No. Retatrutide is an investigational compound and is not approved as a medicine in the UK. Our product is sold strictly for laboratory research and is not for human or animal use.
How should retatrutide be stored?
Lyophilised vials should be kept cool, dry and away from light. Refrigeration or freezing extends shelf life.
All products supplied by Sterling Peptides Ltd are strictly for laboratory research and analytical purposes. They are not for human or veterinary consumption, or for medical, diagnostic, therapeutic or veterinary use. Questions: [email protected]