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The 98.0% to 102.0% purity range actually means we're targeting a specific concentration window, not just a minimum threshold — that's tighter than what most peptide suppliers hold themselves to, and it matters when you're doing dose-response work where even a 2% variance can shift your data.
What it's not great for is any appliction that needs a completely inactive carrier, because the SNAC enhancer is there to improve absorption and it's pretty much built into the formulation, so if you're testing baseline peptide behavior without absorption aids, you'd want a plain semaglutide vial without it.
We usually run the MOQ at 10 vials per order, but custom packaging is availble if you need 5mg per vial or a different count — just confirm lead time if you're going off-spec, as that can add 20 days or so to the schedule.
Storage is straightforward at 2-8°C with light protection, and we've seen that the white to off-white powder stays stable for about 2-3 months under those conditions before any noticeable degradation in HPLC purity, though we recommend using it within 30 days after reconstitution.
Anyway, the molecular weight is 246.71 g/mol for teh base compound, and SNAC is salcaprozate sodium — it's a known absorption enhancer that's been used in oral formulations, so for research on bioavailability, this combo gives you a tighter tolerance than most off-the-shelf peptide solutions.
