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When you're sourcing raw peptide for in-vitro work, the headache is always batch-to-batch variability — one shipment hits 98%, the next drifts, and you're recalibrating assays. We've been there, so what we look for is something that lands consistently at 99% purity without the guesswork, and this semaglutide lyophilized powder does exactly that. It's not for human use, just to be clear — strictly research grade.
The stuff arrives as a white to off-white cake in a sealed vial, and it reconstitutes cleanly with sterile water or PBS, which matters when you're running. Most buyers go with the 5mg or 10mg vials because they're easier to handle for smaller experiments, but we stock 15mg and 30mg too if your lab burns through materail fast. Storage is pretty straightforward: keep it dry and dark, 0-4°C for a few weeks, or -20°C if you're sitting on it longer than that.
Molecular weight is about 4813 g/mol, and CAS is 2023788-19-2 — you'll need that for your inventory logs. Purity is confirmed by HPLC on each batch, and we usually share the COA with the shipment. (The shelf life is over two years if you don't mess up storage, but check your freezer temps.)
Lead time is typically 10-14 working days for standerd orders, though we've had it move faster if stock is already in the warehose. MOQ is one box of 10 vials per strength, so you're not forced to buy a case of 30mg if you only need the 5mg. We do custom packaging, but that usually adds 5 days or so to the lead time — confirm before you order if that matters.
One thing we've learned the hard way: don't store it near the door of a frost-free freezer that cycles warm air — it'll degrade faster than you'd expect. Also, it's not ideal for oral dosing work, since the peptide needs reconstitution and injection in most protocols, so if that's your applicaion, look elsewhere.
