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Most labs ordering from us are running long-term studies where batch-to-batch variation would kill their data, so we've built everything around that—every single vial comes from a lot tested by HPLC and mass spec, usually with a 99.9% or better purity reading, and we keep a reserve sample for at least 12 months in case you need a retest down the line.
It's a white powder in a 20mg vial, stored at 2-8°C away form light, and we've found that if you freeze it at -20°C it stays stable for months—just don't thaw and refreeze repeatedly or you'll degrade the peptide, which is pretty much the biggest mistake we see buyers make.
We run a full COA with every shipment (identity, purity, and a water content check) and also a stability test at 30 days for the lot, so you're not just guessing; the 5L drum is easier to handle for bulk work but for this 20mg size it's single-use vials, obviously, since it's a research-only grade.
What it does is it's not suited for anything beyond in vitro or animal work—we make that clear on every invoice—and molecular weight is about 4113.6 g/mol, but honestly most researchers just care about the purity consistency and the fact that we batch-number everything so you can trace it back to synthesis records.
Also, we usually have stock of the 20mg vials, give or take 50 units on hand, but if you need a custom fill or a different pack size, that takes about 20 days or so because our company have to schedule a dedicated run, and we'll confirm lead time before you order.
Basically, you get a sealed vial with a desiccant pack, a printed COA, and teh option to request an SDS if your lab requires it for storage protocols—just tell us upfront and we'll include it in the box.
