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You've got the powder in the vial and it's time to reconstitute—just remember that this peptide is stable for about 24 months at -20°C if it's kept dry and away form light, but even a few hours at room temperature can start degrading it. We usually have stock, but confirm lead time if you need more than 50 vials at once.
The sequence is Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2 with a molecular weight of 1024.2 g/mol, and it's been run through HPLC to verify purity above 99%—so you're not dealing with crude matrial that'll foul your assays. It dissolves in water at 1 mg/mL, though some researchers find that a quick vortex helps, and it's pretty much clear once it's in solution.
What it does is stimulate MC1R and MC4R receptors, which is why it's used in melanogenesis studies and metabolic work, but it's not suited for anything involving oral dosing—this is strictly for parenteral routes in animal models. 2-4 weeks is a typical storage window once reconstituted if you aliquot it properly, but the lyophilized form holds up for years.
Also, the can look slightly clumpy after shipping, especially in humid conditions, but that doesn't affect purity—just let it settle before opening. We don't offer custom sequences on this one, but our company can do bulk packging if you're running a large study (usually 100 mg per vial is the standard, though we've shipped 50 mg vials for smaller labs).
Most buyers go with the 10 mg vial because of that it's easier to handle for reconstitution, but the 5 mg option is available if you're testing multiple analogs side by side. 3-5 business days for domestic orders, and international freight adds about 10-14 days—we require a signed copy of the SDS for customs clearance, but that's pretty standerd.
