Ipamorelin — Selective Growth-Hormone Secretagogue Research Peptide
Ipamorelin is a pentapeptide that acts as a selective agonist at the ghrelin receptor, studied for its ability to stimulate pulsatile growth-hormone release with comparatively minimal activity at other receptor sites. This selectivity profile distinguishes it from earlier-generation growth-hormone secretagogues in comparative receptor-binding literature.
Researchers studying pulsatile hormone-release mechanisms often pair Ipamorelin with GHRH analogs in stacked research protocols to examine synergistic receptor activation.
Why Receptor Selectivity Matters
Older growth-hormone secretagogues often activated multiple receptor pathways at once, which made isolating their specific effects on growth-hormone pulsatility difficult — other receptor activity muddied the research picture. Ipamorelin was developed specifically to address that, and its selectivity is the entire reason it's cited so often in comparative receptor-binding literature: it lets researchers study ghrelin-receptor-specific effects without confounding activity.
Research Applications
Ipamorelin's selective binding profile makes it a common reference compound in secretagogue structure-activity studies, and its small size (five amino acids) makes it straightforward to verify by mass spectrometry alongside HPLC purity data.
Ipamorelin vs. CJC-1295: Two Distinct Pathways
Ipamorelin and CJC-1295 are frequently studied together because their mechanisms are distinct rather than redundant — Ipamorelin acts on the ghrelin receptor, while CJC-1295 acts on the GHRH receptor. Researchers studying combined-pathway pulsatile hormone release often use both compounds together to examine whether activating both mechanisms simultaneously produces a different release pattern than either alone.
Purity Verification for Ipamorelin
Ipamorelin's small five-residue size makes full sequence verification by mass spectrometry both quick and inexpensive for a supplier to provide alongside HPLC purity data — there's little practical justification for a COA that shows one without the other for a compound this straightforward to verify.
Molecular Profile
Ipamorelin carries CAS number 170851-70-4. Its pentapeptide structure and selective ghrelin-receptor binding profile are what separate it from earlier, less selective growth-hormone secretagogues, making correct-sequence confirmation directly relevant to whether the selectivity behavior researchers expect will actually hold in their assay.
Who Orders Ipamorelin
Demand spans academic endocrinology labs studying pulsatile hormone release, biotech groups researching growth-hormone secretagogue structure-activity relationships, and contract research organizations running comparative receptor-selectivity studies.
Why Researchers Choose Northline's Ipamorelin
Northline verifies every Ipamorelin lot with independent HPLC purity testing and mass-spec sequence confirmation, with a certificate of analysis included on every order — the same documentation standard we apply across the full catalog.
USA-Based, Worldwide Shipping
We ship cold-chain to research labs across the United States and worldwide. Contact our team about lab accounts for recurring Ipamorelin orders, particularly for labs also ordering CJC-1295 for combined-protocol research.
Storage & Handling Notes
Store lyophilized Ipamorelin at -20°C. Once reconstituted, minimize freeze-thaw cycles by aliquotting into single-use volumes.
Frequently Referenced Alongside
Ipamorelin is most commonly ordered alongside CJC-1295 for combined-protocol pulsatile hormone-release research, since the two act on distinct receptors (ghrelin and GHRH respectively) and are frequently studied together for that reason.
Frequently Asked Questions
What is Ipamorelin used for in research?
Ipamorelin is studied as a selective ghrelin-receptor agonist in pulsatile growth-hormone release research, often alongside GHRH analogs in stacked-protocol study designs.
How is Ipamorelin different from CJC-1295?
Ipamorelin acts on the ghrelin receptor, while CJC-1295 acts on the GHRH receptor. The two are frequently studied together for their distinct, complementary mechanisms.
What purity does Northline guarantee for Ipamorelin?
Every lot is independently verified at ≥99% purity by reverse-phase HPLC, with mass-spectrometry sequence confirmation.
Do you ship Ipamorelin internationally?
Yes, we ship to research institutions across the USA and internationally with cold-chain packaging on every order.
How should Ipamorelin be stored?
Store lyophilized Ipamorelin at -20°C. Minimize freeze-thaw cycles once reconstituted.
Can I order Ipamorelin and CJC-1295 together?
Yes, the two are frequently ordered together for combined-protocol research — contact our team about lab accounts for recurring multi-compound orders.