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Co-lyophilised blend of GHK-Cu, BPC-157 and TB-500. For in-vitro laboratory research use only.
£59.99
Out of stockGLP-3 (RT)
In stock
- Tri-agonist
- GIP / GLP-1 / GCG
- CAS 2381089-83-2
- ≥ 99.0% (RP-HPLC)
- Lyophilised powder, batch COA supplied
- Available in 5mg, 10mg, 20mg, 30mg and 60mg vials
Triple GIP, GLP-1 and glucagon receptor agonist. Lyophilised powder for in-vitro metabolic research.
Same-day dispatch
Every UK order includes
- 99.0% HPLC purity, independently verified
- Batch documentation / COA with every order
- Priority shipping — UK & EU · international available
- Discreet, temperature-controlled packaging
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On all UK orders — discreet and tracked.
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We ship across the EU & internationally, tracked to your door.
24-hour processing
Orders placed before 12pm GMT ship the same day from our UK hub.
Delivery guarantee
Lost or damaged? We reship — no questions. Order with confidence.
Analytical data
Specifications,
verified.
Specifications for this compound, independently verified by HPLC and LC-MS before release.
| Property | GLP-3 (RT) |
|---|---|
| Full name | Retatrutide (LY3437943) |
| CAS number | 2381089-83-2 |
| Molecular formula | C₂₂₁H₃₄₂N₄₆O₆₈ |
| Molecular weight | 4731.33 g/mol |
| Purity (HPLC) | ≥ 99.0% (RP-HPLC) |
| Mass confirmation | Confirmed by LC-MS |
| Residual moisture | ≤ 5.0% (Karl Fischer) |
| Form | Lyophilised powder |
| Solubility | Bacteriostatic or sterile water |
| Storage | −20°C sealed and protected from light; 2–8°C once reconstituted |
| Half-life | Approximately 6 days, per published pharmacokinetic studies |
About this peptide
GLP-3 (RT)
Retatrutide is supplied as a laboratory research material for qualified analytical and in-vitro research environments.
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01 Single-chain peptide
39 amino acids carrying a C20 fatty-diacid moiety, molecular weight 4731.33 g/mol.
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02 Triple receptor agonist
Activity at the GIP, GLP-1 and glucagon receptors — the first molecule of its class to reach late-stage trials.
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03 Published record
Phase 2 data in The New England Journal of Medicine and The Lancet, 2023; first-in-human pharmacology in Nature Metabolism, 2022.
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04 Research material
Supplied lyophilised at −20°C with a batch certificate of analysis, for analytical and in-vitro use only.
FAQ
Before you order.
Anything not covered here, ask us directly — replies within one working day.
Is a COA included with my order?
Yes. Every vial ships with a certificate of analysis tied to the lot number printed on its label, covering identity by mass spectrometry and purity by HPLC. Retained samples are held so a batch can be re-tested.
How is the product shipped?
Lyophilised powder is stable at ambient temperature in transit and ships in discreet, tracked packaging. UK and EU orders are sent on a priority service; international destinations are quoted at checkout.
How should the vial be stored on arrival?
Keep it sealed at −20°C, protected from light. Lyophilised material is stable for months under those conditions. Once reconstituted, store at 2–8°C and use within the window stated on the certificate of analysis.
Who is this product for?
Qualified researchers and laboratories only. It is supplied strictly as an analytical and in-vitro research material, and is not a medicine, a supplement or a veterinary product.
How does this differ from tirzepatide?
Retatrutide adds glucagon-receptor activity to the GIP and GLP-1 agonism tirzepatide already has, which is why it is described as a triple agonist. The two are separate compounds with separate CAS registrations.
Which vial size should I order?
All five sizes are the same compound; they differ only in the mass of lyophilised peptide per vial. Choose by the working volume your protocol needs.
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