≥99.9% purity is what we verify for every single batch—HPLC-tested, not just a number on paper, and we include the full COA with the chromatogram so you can see the peak yourself.
The molecular weight at 4106.6 g/mol means it's a big triagonist peptide—we see it used mostly in metabolic studies for obesity-related research, but it's not suited for anything in solution form since it's a lyophilized powder that needs reconstitution.
Actually, what it does is bind to GLP-1, GIP, and glucagon receptors simultaneously, but we don't get into mechanism beyond the purity spec—that's your lab's call, and the COA is the only proof we stand behind.
We usually have stock for the 2mg vial format (sealed under inert atmosphere), and lead time is about 5-7 workdays or so—but for larger quantities like 50 vials or more, confirm lead time as it varies.
Storage at 2-8°C, protected form light—if it sits out at room temp for a couple days it's still fine, but for the full 24-month shelf life you'll want it in fridge.
Anyway, we don't offer a retest policy on opened vials, but if teh COA doesn't match what we claim, we'll replace it—just send us the batch number and we'll handle it.