We've been moving this for a while now, CAS 910463-68-2, and it's pretty much the standard for GLP-1 related work in the lab — most buyers go with teh 10mg vial size for reconstitution, but we can do bulk powder if you're scaling up.

Purity runs at 98% or better by HPLC, and we test every batch, so you're not guessing about what's in the vial. Storage is straightforward: keep it at 2-8°C in a tight container away from light, and you'll get the full 24 months shelf life (usually, we see it hold fine even at 18 months if the seal's good).

It's not for human use, obviously, but for metabolic pathway studies or receptor binding assays, it's better than reagent grade for this — the freeze-dried form handles shipping well, and we've had labs run it in both in vitro and in vivo models without issues. One thing though: don't try to use this for anything involving oral dosing without proper formulation, it's not designed for that.
Each batch ships with a COA and HPLC trace, and we can provide the SDS and TDS on request — we usually have stock, but confirm lead time if you need more than 50 vials or so. Payment is typically T/T or L/C, and we can do partial shipments if your MOQ is tight.

Anyway, the 5L drum is easier to handle for larger runs, but most procurement folks just go with the 10-vial box format because of that it's simpler to track. Lead time is about 20 days or so form order, give or take a few depending on your shiping method.