GLP-3 (RT) 10mg
£59.99 per vial · Peptides · Research use only
About GLP-3 (RT) 10mg
GLP-3 (RT) 10mg is a synthetic 39-residue modified peptide, supplied as lyophilised powder in a single vial for in-vitro laboratory research.
Product specifications
- Compound
- GLP-3 (RT)
- Declared content
- 10mg per vial
- Format
- Lyophilised powder
Batch documentation
The current published lot is IP-RETA10-002. The batch record from Janoshik Analytical (CZ), dated 24 August 2026, lists reported purity of 99.191% (RP-HPLC) and measured content of 10.74 mg/vial.
View the certificate of analysis →
Intended use
For in-vitro laboratory research only. Not for human or veterinary use.
Technical notes and further reading
- CAS number
- 2381089-83-2
- Molecular formula
- C221H342N46O68
- Molecular weight
- 4731.3 g/mol
- Sequence
- 39-residue modified peptide
Specification
| SKU | RT10 |
|---|---|
| Compound | GLP-3 (RT) |
| Price | £59.99 per vial |
| Format | 10mg per vial |
| Availability | In stock |
| CAS number | 2381089-83-2 |
| Molecular formula | C221H342N46O68 |
| Molecular weight | 4731.3 g/mol |
| Sequence | 39-residue modified peptide |
| Published batch / lot | IP-RETA10-002 |
| Reported purity | 99.191% (RP-HPLC) |
| Measured content | 10.74 mg/vial |
| Identity status | LC-MS identity result not published |
| Tested by | Janoshik Analytical (CZ) |
| Report date | 2026-08-24 |
| Storage | Lyophilised: −20 °C, protect from light |
| Intended use | In-vitro laboratory research only |
What does the research on GLP-3 (RT) investigate?
The in-vitro work that uses a molecule like GLP-3 (RT) is largely receptor pharmacology: assays that ask how strongly a compound associates with a receptor and what happens downstream in a cell when it does. The reason three receptors are named together is that the same chain is reported to engage all of them, and the interesting questions in that literature concern selectivity - how the balance of engagement across the three compares, and how substitutions in the sequence shift it. Running that kind of work puts unusual demands on the material. Dose-response and binding calculations are done in molar terms, so the exact quantity of peptide in the vial matters, and at 4731.3 g/mol a small error in the assumed concentration is an error in every result built on it. Identity confirmation needs enough resolution to detect a single substituted residue. None of this establishes a benefit, effect or outcome in humans.
Is GLP-3 (RT) legal in the UK?
GLP-3 (RT) is not a licensed medicine in the United Kingdom and is not listed in any schedule of the Misuse of Drugs Act 1971. Selling it as a research chemical is a lawful trade; what the law restricts is the purpose it is sold for, not the fact that it is sold.
Three pieces of legislation frame that distinction. The Human Medicines Regulations 2012 make it an offence to sell an unlicensed product for human use. The Psychoactive Substances Act 2016 prohibits supplying a psychoactive substance for human consumption, which is why a research-only basis is not a formality. The Misuse of Drugs Act 1971 would apply only if the compound were scheduled, and it is not. Each of these turns on the purpose of the supply, so the statements on this page are written plainly rather than tucked into small print.
In practice that means a supplier may lawfully sell to a researcher, research organisation or business buying for research, and the buyer confirms at checkout that they are 18 or over, buying in the course of research, and responsible for handling, storing and disposing of the material lawfully. Nothing here is legal advice for your own circumstances; if you need a position, take qualified advice.
Retatrutide is an investigational compound and is not a licensed medicine in any territory.
How are identity and quality assured?
Each released lot is tested and the result is published, rather than the material being described as high purity on the strength of a supplier's word. Purity is measured by reversed-phase HPLC at an independent laboratory. The laboratory used for every lot published so far is Janoshik Analytical, in the Czech Republic, and the result is stated alongside the measured content against label so the two can be read together.
The report carries the lot number printed on the vial, which is the part that matters. A certificate showing a result without a lot number cannot be tied to the vial in front of you, and a certificate for a different lot tells you nothing about yours. Matching the printed number on the label to the number on the report is a five second check and it is the whole point of publishing both.
Identity confirmation by mass spectrometry is a separate test and is ordered as an add-on, so the figures published here come from RP-HPLC purity testing unless a report says otherwise. Where no report is published for a listing yet, the documentation held for the lot being shipped can be requested before you order. We would rather send you what exists than let you assume a certificate is available when it is not.
Synthesis and supply
Peptide material is built by solid-phase synthesis, purified by preparative HPLC, then lyophilised. Lyophilisation freezes the solution and removes the solvent under vacuum, which is why the vial arrives holding a cake or powder rather than a liquid and why a solvent has to be added before the material can be worked with. Removing water also removes the main route by which a peptide degrades in storage, which is the reason the format is used.
Sequence length and modification are what make batches differ in difficulty. Every coupling step is an opportunity for a truncated or deleted by-product, and a heavily modified or long chain presents more of them, which is why the purity trace rather than the headline figure is what a certificate is read for. Vials are filled and labelled with the lot number, and the lot number is what the report and the verification lookup resolve against.
External resources for researchers
These are the public reference sources we use when checking the identity of GLP-3 (RT), and the ones worth going to before relying on anything stated on a product page, including this one.
- PubChem — Compound records, computed properties, depositor-supplied identity data.
- CAS Common Chemistry — CAS Registry lookups where a registry number is known.
- ChEBI — Curated chemical ontology entries with cross-references.
- Europe PMC — Primary literature search by compound name, sequence or registry number.
- Certificate hub — Reports published for the lots released so far.
Frequently asked questions
What does "triple agonist" describe?
Activity at three receptors from one molecule. Two of them are incretin receptors — those for glucose-dependent insulinotropic polypeptide and for glucagon-like peptide-1 — and the third is the glucagon receptor itself. The term is a receptor-pharmacology classification used in in-vitro binding and signalling studies; it says nothing about any application of the material, which is supplied for laboratory research only.
Why does the lipid modification matter analytically?
The C20 diacid chain makes the molecule markedly more hydrophobic than an unmodified peptide of the same length, which pushes reversed-phase retention late and can complicate separation from closely related synthesis by-products. It also adds a defined mass increment that identity confirmation checks for.
Does mass accuracy matter more at this molecular weight?
Yes. At around 4.7 kDa a single missing or substituted residue is a small fractional change in the total, so identity work needs enough resolution to see it, read alongside the purity trace rather than instead of it. This is one of the compounds where the analytical detail on a certificate carries the most weight.
Is GLP-3 (RT) supplied for human or veterinary use?
No. Every product on this site is supplied strictly for in-vitro laboratory research. GLP-3 (RT) is supplied as a lyophilised powder in a sealed vial and is not a medicine, supplement, food, cosmetic or veterinary product. It is not supplied for human or animal consumption, administration, or any in-vivo use, and no dose, route or human application is described or offered anywhere on this page. Buyers confirm they are 18 or over and purchasing in the course of research.
How is the purity figure measured, and what does it actually tell me?
Purity is measured by reversed-phase HPLC at an independent laboratory, and the result is published with the method conditions rather than as a bare percentage. The figure is the proportion of the UV-absorbing material in the chromatogram that elutes as the target peak. It describes the sample as analysed; it is not a statement about what the material is for. A high figure alongside a clean chromatogram is the useful combination, which is why the report is worth reading rather than the headline number alone.
What documentation comes with a batch?
Each released lot carries a number printed on the vial label and a report stating purity by RP-HPLC, measured content against label, and the testing laboratory. Reports published so far are listed on this page and collected on the certificate hub, and each carries a lot number that can be checked against the vial in front of you. Where a report is not yet published for a listing, ask before ordering and we will send the documentation that exists for the lot being shipped.
How should GLP-3 (RT) be stored?
In the form supplied, as a lyophilised powder, the material is stable kept cold, dry and dark. For powder, that means a freezer at around minus 20 degrees Celsius, desiccated, with the vial sealed and shielded from light, which is how it should stay until you are ready to work with it. Bringing a vial to room temperature before opening avoids condensation on the contents. Once in solution the material is less stable than the powder and should be kept cold and used within a short working window. Choosing a solvent and a storage regime for your own work is your call, not ours.
Do I need bacteriostatic water to prepare it?
A lyophilised powder needs a solvent added before it can be worked with. Bacteriostatic water, which is water with 0.9% benzyl alcohol, is the common choice because the preservative extends the working life of the solution once the vial has been opened, and we supply it in 3ml and 10ml vials. It is not the only option: where a method cannot tolerate benzyl alcohol, use the solvent the method specifies. The choice affects the sample, so it belongs to the researcher.
How and when is an order shipped?
Orders are dispatched from the United Kingdom. An order placed before 4pm on a working day is collected the same day; weekends and bank holidays roll forward to the next working day. Delivery is tracked, and shipping is free on UK orders over 30 pounds, with tracked 48 hour service at 3.65 pounds below that. Tracking is sent when the parcel is collected, so the first scan is usually visible the same evening.
Why does molar concentration matter more for this compound than for a small peptide?
Because the molecular weight is high and the mass on the label is small. At 4731.3 g/mol, ten milligrams is about two micromoles, so a vial contains comparatively few molecules for its weight. Any binding or dose-response calculation that assumes a concentration without working from the measured content and the true molecular weight will be wrong in the same proportion, and the error propagates through everything derived from it.
What does selectivity mean in a triple-agonist context?
It describes how engagement is distributed across the three receptors rather than whether engagement happens at all. A molecule can associate with all three while preferring one, and the published literature characterises that balance using binding affinities and signalling readouts in isolated systems. The word agonist itself is a receptor-pharmacology classification. It says where a molecule interacts, not what it is for.
What does identity confirmation need to establish for this material?
That the observed mass matches the expected mass closely enough to exclude a single substituted or deleted residue, and that the lipid modification is present. At this molecular weight a single residue change shifts the total mass by a small fraction, so the measurement needs the resolution to see that difference and the result has to be read alongside the purity trace rather than instead of it.
Is this compound licensed anywhere?
No. It is an investigational molecule and is not a licensed medicine in any territory. The material listed here is not licensed for any use and is not supplied for human use; it is offered strictly as a research chemical for in-vitro laboratory work. Nothing on this page describes a dose, a route or any application.
Documentation & batch verification
The current released lot is IP-RETA10-002, tested 2026-08-24 by Janoshik Analytical (CZ): RP-HPLC purity 99.191% (RP-HPLC), measured content 10.74 mg/vial, identity Purity confirmed (RP-HPLC). The full report for this lot is published and can be checked online — verify this batch. See the full record for lot IP-RETA10-002 or all published certificates of analysis.
Published batch records show the laboratory, report date, purity and measured content where reported. Check the certificate for the exact lot: an HPLC purity result does not establish LC-MS identity, sterility or suitability for human or animal use. Review the published batch record before ordering.
Request an invoice · Verify a batch
Research use only. Not for human or animal consumption.