Ipamorelin is a compact five-residue peptide, and verifying that a lot matches that exact sequence at a stated purity is the analytical foundation of any downstream research use.
Reversed-phase HPLC
Because ipamorelin is short, synthesis byproducts tend to be simpler than for longer chains, but incomplete couplings and side-chain protection artifacts still occur; reversed-phase HPLC resolves the target peptide from these, with the resulting purity figure interpreted per understanding HPLC purity.
Mass spectrometry for identity
Mass spectrometry independently confirms the molecule's mass matches the expected value for ipamorelin's sequence, closing the gap HPLC retention time alone can leave — see HPLC vs. mass spectrometry.
Why selectivity depends on exact sequence
Ipamorelin's defining research property — selective ghrelin-receptor engagement without meaningfully co-releasing cortisol or prolactin, discussed in its mechanism of action — depends on the precise five-residue sequence being intact; a contaminated or truncated lot could behave more like a less selective secretagogue such as hexarelin in an assay.
Documentation to expect
A lot-specific certificate of analysis, ideally corroborated by independent third-party testing — see how to read a CoA.
Product page: Ipamorelin research vials.
Research Use Only. Supplied strictly for laboratory research and development — not for human or veterinary use, consumption, or any therapeutic or diagnostic purpose. This article is research education, not usage guidance.