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It’s not just the 99%+ HPLC purity that matters, but the batch-to-batch consistency we actually track — we’ve seen enough supliers skip that step. Every vial comes with a COA, and our company can usually provide the mass spec data for the sequence verification within a day or so.
Lyophilized powder, obviously, and you’ll want to store it at -20°C for the long haul; short-term at 2-8°C is fine for a week or two. Molecular weight varies by compound, so we list it per product — don’t assume they’re interchangeable. Most buyers go with the 5mg or 10mg vials for typical dosing protocols.
We test each batch by HPLC and MS, but here’s teh catch — if you need retesting after six months, we do offer a retest policy, though it’s usually for standing orders of 50 vials or more. The powder is white to off-white; if it’s yellow, something went wrong in lyophilization.
Solubility in water or saline is straightforward, but reconstituting it too fast can cause foaming — go slow, it’s worth extra minute. Basically, this isn’t suited for anything outside controlled lab work, no ifs or buts about it.
24-month shelf life sounds good, but we’ve found it holds up better when you don’t open the vial more than a few times — moisture kills it. Custom packging is avaliable (10 vials per kit standard), but lead time can stretch to 20 days or so if you want something non-standerd.
Anyway, for researchers who need a clean, reproducible peptide for anti-aging or mitochondrial studies, this fits the bill — just don’t expect it to work in cell assays without proper handling.
