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The biggest thing you need to know upfront is these are non-sterile and research-grade only, so if you're running anything in vivo or clinical, this isn't the materail for you — we've had a few buyers miss that and it's a hard stop.
For standdard in vitro work though, it's actually pretty solid. 3. We routinely batch-test about 50 vials per lot and the HPLC traces come back clean, purity consistently at or above 99% — teh endotoxin level is under 1EU/mg, which is tighter than what some reagent-grade suppilers bother to check.
You'll get a sealed vial with desiccant, lyophilized powder that's water soluble, and we store everything at -20°C (usually 2-4 weeks of stock on hand, but confirm lead time if you need more than 100 units or so). 5. The molecular weight varies by peptide, obviously, and CAS numbers are peptide-specific — our company provide the COA with each batch so you can verify.
One thing that caught me off guard first time: the 12-month stability claim is accurate only if you never let it thaw — we've had a batch degrade in about 8 months after a freezer door was left open, so keep that in mind. 7. Anyway, for most labs running standard assays, the 10mg vial is what we usually go with.
