The struggle is real when you're sourcing qualiy research peptides in the UK—too many suppliers with inconsistent batches or vague COAs, so we've it.
We're working with Tirzepatide CAS 2023788-19-2, a dual GIP/GLP-1 receptor agonist that basically hits both pathways for metabolic studies, and it's ≥99% pure by HPLC (we've got COA on request).

It's a in 10mg vials—pretty much the standard for reconstitution work, and you'll want to store it at 2-8°C away form light, which is typical for these peptides.

Most buyers go with the 10mg size for smaller-scale assays, but we can do custom vial sizes if you're running larger studies—just confirm lead time (usually 2-4 weeks).

Also, this isn't suited for anything beyond research use, so don't try to push it into clinical work; teh purity's tight, but the grade is strictly for lab application.
We usually have stock on hand, but for bulk orders over 50 vials or so, give us a heads-up—the 10mg per vial format is easier to handle than larger drums for most labs anyway.