XCE Peptides | High-Purity 99% GLP-1 Peptide Powder | Retatrutide for Research

We're looking at a 99% pure lyophilized powder here, a GLP-1 analog designed specifically for metabolic research — it's not for human use at all, and that's a critical distinction. The molecular weight is sequence-dependent, so we don't list it as a fixed number, but the HPLC and MS analyses confirm it's correct. Store it at -20°C in a desiccated enviornment, and you'll get a solid 24 months of stability, give or take.

The purification method is preparative HPLC, which basically means we're stripping out anything that shouldn't be there, and the endotoxin level comes in under 1.0 EU/mg — that's tighter than some reagent-grade stuff we've seen. We include a batch-specific COA with every order, so you've got the data to back up what you're working with. It's sterile filtered too, which matters if you're reconstituting for in vivo work, but honestly, it's overkill for most in vitro setups. The white to off-white powder appearance is pretty standerd, nothing flashy, but teh consistency across vials is what we're proud of.

Most buyers go with the 10mg or 15mg vials for initial studies, though we stock 20mg and 30mg options if you're scaling up. The vials are sterile and sealed, so once you open one, use it within a few days or so — that's just the reality of lyophilized peptides. One thing people don't always ask: sequence is proprietary, so our company can't share the full amino acid chain, but we've confirmed it's a true GLP-1 analog through mass spec.

Also, we usually have stock on the common sizes, but confirm lead time if you're ordering 30mg vials in bulk — sometimes production batches lag by about a week. The solubility is straightforward: sterile water or buffer, and it dissolves cleanly without clumping, which is better than some competing analogs we've tested. It's not suited for oral administration research at all, just so you know — the bioavailability would be terrible.

It's pretty much a workhorse for receptor binding assays or dose-response studies, and the 99% purity means less variability in your results. We've had a few researchers mention it's better than other GLP-1 analogs they've tried for their specific protocols, though your mileage may vary depending on the applicaion.