Custom QSC Semaglutide Synthesis - 99.9% Pure Peptide Compound

Actually went with the custom synthesis route on this one because the standard suplier we'd been using had a 4-6 week lead time and we needed it faster — they quoted 20 days or so for this batch, which is tight but doable if we push teh order through today.

Purity is listed at ≥99% by HPLC, which is better than reagent grade for this type of work, and the molecular weight comes in at 4113.6 g/mol with the CAS 910463-68-2 — we've had issues with lower-grade matrial showing degradation peaks in our assays, so the tighter tolerance matters.

It's a white to off-white powder, soluble in water, and storage is pretty standard at -20°C protected from light; the 24-month stability window is fine for our project timeline, though we usually have stock on hand but confirm lead time for custom runs.

One thing that caught my attention is the packaging — they offer custom options, which is useful because most buyers go with standard vial size but we need something that fits our automated dispensing setup, and the MOQ was roughly 50 grams or so.

This isn't suited for in vivo work without further purification steps (check the COA for residual solvents), but for our in vitro binding studies it's basically perfect — the extended half-life characteristic of GLP-1 analogs is what we're after, and the HPLC data form the last batch showed no significant impurities at the ppm level.