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If you're sourcing GLP-1 intermediates for in vivo work or receptor binding assays, purity drift is a real headache. We've seen batches form less disciplined suppliers come in at 97% one lot and 94% the next—that variability kills dose-response reproducibility. Our powder holds at ≥99% by HPLC, and we run a column on every single lot before it ships.
The peptide's molecular weight is 4113.6 g/mol and it's a lyophilized white cake, not a loose fluff. Solubility is straightforward in water or buffer at 1-2 mg/mL; just avoid vortexing hard if you're reconstituting for injection work. One thing most buyers don't anticipate is that the -20°C storage is strict—leave it on the bench for 4 hours and you'll see aggregation on the next SEC trace.
We do custom vial sizes based on your typical batch needs, not just the standerd 5mg or 10mg. Most labs our company supply go with 25mg per vial for chronic dosing studies, but we've also packed 100mg for large-scale binding assays. CAS 910463-68-2 is what you'll see on the COA, and we include that with every order (usually within 2 business days).
Actually, this isn't suited for formulation development past the initial solubility screen—it's research-grade only, no excipients or sterile filtration. We ship it as a bulk intermediate, not a finished drug product. Lead time is typically 7-14 days for custom vials, and we usually have stock on the common sizes.
So you get the lyo vial, a COA with the HPLC trace and MS confirmation, and the SDS. That's it. No flashy packging, no pre-measured buffer—just the peptide at ≥99% and the documentation to back teh number.
