We've been supplying this particular GLP-1 agonist for a while now, and it's something we handle regularly—the CAS is 910463-68-2, and you're looking at a white powder with purity at 99% or better, which matters because even small impurities can throw off your in metabolic research.
Basically, what it does is mimic incretin hormone to stimulate insulin secretion and slow gastric emptying, and most buyers go with the 10mg vials for longer studies since reconstituting smaller amounts gets tedious.

Storage is critical here, so you'll want to keep it at -20°C in a dry enviroment, and we usually have stock on the 2mg, 5mg, and 10mg vials—but confirm lead time if you need more than 50 units or so, as that's about what we keep on hand.
It's not great for anything involving prolonged room-temperature handling, since the peptide degrades pretty quickly above -20°C, and one thing you might not think to ask is that the solubility in water is straightforward but we've found it reconstitutes faster if you let the vial warm to room temp for a couple minutes first.

5, our company provide a COA with HPLC trace, and teh molecular weight comes in at 4113.58 g/mol, which is consistent with pharmaceutical-grade materail—though you'll want to verify your own test methods since we don't always have the latest TDS on hand for every lot.
Anyway, the shelf life is 24 months when stored properly, and we typically ship with dry ice for UK orders, so you won't have to worry about thermal damage in transit.