Selective GH Secretagogue — GHS-R1a Agonist — 5mg
Buy Ipamorelin UK from Pureline Biolabs. Ipamorelin is a synthetic pentapeptide and selective agonist at the ghrelin receptor (GHS-R1a). Supplied as lyophilised powder for laboratory research and studied in growth-hormone secretion and receptor-selectivity research. Independently verified at 99.541% purity by Janoshik Analytical.
19.99
Inc. VAT · Free UK delivery over £75
Batch PLB-004 · Janoshik Analytical · 99.541% purity confirmed
About Ipamorelin
Ipamorelin is a pentapeptide agonist at the growth hormone secretagogue receptor (GHS-R1a), developed by Novo Nordisk. It was designed as a more receptor-selective alternative to earlier secretagogues such as GHRP-2 and GHRP-6.
In published animal studies, Ipamorelin’s selectivity has been assessed by measuring GH alongside cortisol, prolactin and ACTH. The limits of that evidence are covered on our Ipamorelin compound profile.
All Pureline Biolabs Ipamorelin is supplied as a lyophilised powder in sealed vials, independently tested by Janoshik Analytical at 99.541% purity.
Product Specifications
| Compound | Ipamorelin |
| Also known as | NNC 26-0161 |
| Primary receptor | GHS-R1a (selective) |
| Structure | Pentapeptide |
| Molecular formula | C38H49N9O5 |
| Molecular weight | 711.87 g/mol |
| CAS number | 170851-70-4 (free peptide) |
| PubChem CID | 9831659 |
| Vial size | 5mg lyophilised powder |
| Purity | 99.541% — Janoshik verified |
| Form | Lyophilised powder, sealed vial |
| Manufacturing | Batch-Tested on Receipt |
| Batch | PLB-004 |
| Research use only | Not for human consumption |
Research Background
Ipamorelin has been studied in growth-hormone axis and receptor-pharmacology research. The areas below describe what studies measured, not established effects. For the full evidence review, see the Ipamorelin compound profile. This product is supplied for laboratory research purposes only.
Animal studies have measured GH release profiles, including pulse amplitude and duration.
Comparative studies have measured binding and functional activity at GHS-R1a versus GHRP-2, GHRP-6 and ghrelin.
Animal studies have measured circulating and tissue IGF-1 following GH release.
Animal studies have measured glucose, lipid and nitrogen-balance markers.
Rodent studies have measured bone mineral density and bone-formation markers.
Studies have measured cortisol and ACTH alongside GH to assess receptor selectivity.
Store in refrigerator. Keep away from direct light and heat sources.
Use within 28 days. Do not refreeze once reconstituted.
Stable for up to 24 months when frozen as lyophilised powder.
Standard precautions — keep away from direct sunlight.
Reconstitution Guide
Ipamorelin is supplied as a lyophilised powder and must be reconstituted with bacteriostatic water before use in research applications.
Allow vial to reach room temperature. Clean the rubber stopper with an alcohol swab and allow to dry completely.
Draw required volume of BAC water into a sterile syringe. Inject slowly down the inside of the vial wall — not directly onto the powder.
Gently swirl until powder fully dissolves. Do not shake. Solution should be clear and colourless.
Use our Reconstitution Calculator → for exact volumes.
Buying Ipamorelin in the UK — common questions
What purity is Pureline’s Ipamorelin, and who tested it?
Batch PLB-004 was reported at 99.541% by HPLC at Janoshik Analytical, with LC-MS supporting the assigned molecular identity. That is an area-percent figure under the laboratory’s stated method: it describes the chromatographic purity of the tested sample, not biological activity. The purity figures guide explains what a 99% number does and does not tell you.
How much bacteriostatic water does a 5mg Ipamorelin vial need?
2ml gives 2.5 mg/ml and 1ml gives 5 mg/ml — mass divided by volume, nothing more complicated than that. The reconstitution calculator has the 5mg vial loaded, and the reconstitution guide covers the surface-adsorption losses that catch people out at low concentrations.
How does Ipamorelin differ from the other GH-axis research peptides?
Ipamorelin is a pentapeptide that acts at the ghrelin receptor (GHS-R1a) and is described in the literature as selective — it is studied precisely because it does not drive the same broad hormonal response as earlier secretagogues. Growth-hormone-releasing-hormone analogues such as CJC-1295 or tesamorelin act at a different receptor entirely, which is why they are treated as separate research articles rather than alternatives.
How should Ipamorelin be stored?
Sealed and lyophilised at 2–8°C, away from light; it ships cold chain from our UK facility. Once reconstituted, refrigerate at 2–8°C and aliquot into single-use portions before freezing, so the stock takes one freeze-thaw cycle rather than one for every use. Let the closed vial warm to room temperature before you open it — lyophilised powder is hygroscopic.
How fast do you ship, and where from?
Stock is held and dispatched in the UK under cold chain, so orders do not sit in customs. Delivery is free over £75. Full detail is on the shipping policy page.
Can I see the Certificate of Analysis before I order?
Yes. Every batch report is published on our independent lab reports page before the stock goes live, and the batch number on the report matches the number printed on your vial. The label also carries a QR code that opens the report on Janoshik’s own verification server.
Is Ipamorelin legal to buy in the UK?
It is supplied strictly as a research chemical for in vitro laboratory use. Ipamorelin has no UK marketing authorisation and is not a licensed medicine here, so it is not sold for human or veterinary use. The UK peptide law guide sets out how research-use materials sit within the regulations.
All products sold by Pureline Biolabs Ltd are intended strictly for laboratory research purposes only. Not approved for human consumption, veterinary use, or any other application. Not evaluated by the MHRA or any other regulatory authority. Pureline Biolabs Ltd · Company No. 17236739 · purelinebiolabs.com
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