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We're looking at the 99.9% purity on HPLC for this one, and it's the you'd expect for peptide work—the CAS is 2023788-19-2, molecular weight around 4813 g/mol, so it's a pretty large polypeptide. It's not for anything clinical, obviously, just preclinical metabolic studies targeting those GIP and GLP-1 receptor pathways, and that's where we'll use it.
The suplier runs every batch through independent HPLC and mass spec verification, and they provide a COA with the results—we usually have stock, but confirm lead time for larger orders, especially if you need import docs for customs. Most buyers go with the 10mg vials, but we ordered a mix of 5mg and 15mg depending on teh protocol, and they come ten.
Storage is a pain—it have to be at -20°C and protected form light, or the stability drops off faster than you'd expect, so make sure the lab freezer space is cleared. One thing I learned from handling this before is that the lyophilized powder can clump if it's exposed to humidity even briefly, so we're keeping the vials sealed until use.
Compliance-wise, they're GMP-compliant on the production side, and we've got the documentation for EU and UK import—they provide a retest policy within a defined window, which is basically a safeguard if we want to verify purity on arrival. It's not suited for anything beyond research use, so don't let anyone try to push it into formulation work.
Also, the EC number is 200-001-8, but that's more for regulatory filing than anything we'd use day-to-day—anyway, the purity consistency across vials has been tight in past orders, better than reagent grade for this kind of study. So I'm comfortable our company can trust this supplier for the region.
Our MOQ is 10 vials per box, but you can mix different strengths like 5mg, 10mg, and 15mg in one order if needed. For larger quantities, just reach out and we can discuss bulk pricing.
Yes, every batch comes with a COA that includes the HPLC purity results, molecular weight verification, and appearance details. Just request it with your order and we'll include it.
Store it at -20°C in a freezer, protected from light. The lyophilized powder is stable under these conditions for up to 24 months. Avoid repeated freeze-thaw cycles.
We can customize vial sizes within a reasonable range, like 2mg to 20mg per vial, but the standard options are 5mg, 10mg, and 15mg. For special requests, just give us the details and we'll see what we can do.
For standard orders of 1-10 boxes, lead time is 3-5 business days after payment confirmation. Larger bulk orders may take 7-14 days depending on stock and custom packaging needs.
