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99% or better by HPLC is teh floor we hold every batch to, and that mechanism hitting GLP-1, GIP, and glucagon simultaneously is what makes it interesting for metabolic work. We've seen researchers push it in weight management protocols, but honestly it's not ideal for acute dosing studies — the half-life in that lyophilized state is pretty long once reconstituted.
The 3872.3 g/mol molecular weight means you're dealing with a fairly large peptide, so filter-sterilized solution before lyophilization is critical to avoid aggregation — we do that as standerd, and endotoxin stays under 0.1 EU/mg. Most buyers go with the 10mg vial for, but the 5mg option is easier if you're running small pilot batches.
Storage is straightforward but unforgiving: -20°C protected form light, and we've tested shelf life at 24 months under those conditions, though we usually have stock turn faster than that. is basically what you expect — no clumping issues if it's kept dry, and reconstitution in sterile water or saline takes about 30 seconds.
Ordering is typically in 10-vial boxes, and our company can mix 5mg or 10mg per vial depending on your batch size. Lead time is usually 10-14 working days or so, but check it — sometimes we're faster if stock is on hand. MOQ is one box, and we include the COA with each shipment (HPLC traces, endotoxin data, appearance check).
