How Long Does GHRP-6 Last? Shelf Life & Stability
"Stable" is meaningless without saying stable against what. GHRP-6 has its own set of degradation routes, and they determine which storage precautions actually matter for it.
In plain English
Light is the enemy, twice over. Two tryptophans mean two independent places for light damage to occur. Worth noting: the molecule contains mirror-image amino acids that make it very resistant to enzymes — but that protection does nothing at all against light. Enzyme-resistant and light-resistant are separate properties.
What GHRP-6 actually is
GHRP-6 is a six-amino-acid molecule from the 1980s that triggers growth hormone release. It has a genuinely remarkable history: it was built and shown to work years before anyone identified the receptor it acted on, and the hunt for that receptor eventually led researchers to discover ghrelin in 1999.
Supplied for laboratory research use only — not for human or animal use.
Third-party tested by HPLC and LC-MS, ≥99% purity, with a Certificate of Analysis on every order. Ships across Canada.
Technical detail below
Degradation routes specific to GHRP-6
- Tryptophan photo-oxidation at two independent positions — the defining instability of this molecule.
- Oxidative degradation accelerated by dissolved oxygen and trace metals.
- Slow hydrolysis over extended solution storage.
The D-amino acids at positions 2 and 5 confer good resistance to enzymatic degradation, but offer no protection whatsoever against photo-oxidation. Enzymatic stability and chemical stability are separate properties and this compound illustrates the distinction well.
Freeze–thaw tolerance
Aliquot on reconstitution and keep aliquots dark.
How storage addresses these routes
Practical window once reconstituted: 2–3 weeks at 2–8 °C. Protect from light rigorously; with two tryptophans the photo-oxidation risk is doubled.
Full GHRP-6 storage conditionsWhat GHRP-6 is studied for
Acts at GHS-R1a — the receptor whose search for an endogenous ligand led to ghrelin's discovery.
Strong GH-releasing activity in research models, historically the compound's defining property.
Ghrelin-receptor activity links it to appetite pathways in metabolic research models.
A landmark in reverse pharmacology: the synthetic ligand preceded knowledge of both receptor and natural ligand.
Summarizes published preclinical literature. Provided for research reference only; not a claim of efficacy or a description of human use.
More GHRP-6 reference
Lyophilized and reconstituted storage conditions, plus the practical working window.
Diluent selection, dissolution behaviour, and the calculator preset for this compound.
Which solvents work, why, and what abnormal dissolution behaviour indicates.
Which assays are informative for this molecule, and what to actually check on its COA.
Compound-specific bench practices, and the errors most often made with this molecule.
What to inspect on arrival, and which conditions actually warrant rejecting a vial.
Questions specific to this compound — structure, chemistry, and common misconceptions.
Stability reference for other compounds
GHRP-6 is supplied strictly as a research chemical for in-vitro laboratory and research use only. It is not intended for human or animal consumption, diagnostic, or therapeutic use. This page is educational laboratory-handling reference information — not medical advice, not usage guidance, and not a protocol.