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That 99%+ purity threshold isn't just a number — it's what keeps degradation products low enough for your in vivo work to actually mean something, and we've seen labs come back with clean HPLC runs batch after batch.
Most buyers go with the 10mg vial simply because of that it saves on reconstitution steps, but we do 2mg or 5mg depending on how tight your dosing schedule is — the 5L drum or 50-unit orders we usually have stock, but confirm lead time (usually 2-4 weeks) if you're pushing a deadline.
Storage is pretty straightforward: 2-8°C for short term, but if you're planning a long shelf life you'll want -20°C for anything beyond a few months anyway, and the white powder stays stable for over two years when handled right — one thing people don't think to ask is that brief tempearture fluctuations during shippng won't kill peptide as long as you freeze it promptly.
For custom orders we can tighten the peptide content per vial or adjust teh fill volume based on your exact reconstitution needs — basically, if you're a lab running sub-100µg doses, a 2mg vial makes more sense than cracking open a 10mg one every couple days.
Logistics for bulk semaglutide mean we ship in insulated boxes with ice packs, and the CAS (910463-68-2) is the same as the commercial weight loss version, so your customs paperwork should match up fine — it's not suited for anything beyond research use though, and we don't pretend otherwise.
Anyway, the tightest batch we've run in our last 50 orders held 99.4% purity with no detectable endotoxins, which is better than reagent grade for this type of long-acting analog work.
