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Most buyers come to us after getting burned by inconsistent purity or bad COAs—we've had to re-verify a few supliers ourselves before settling on this line.
Each batch runs through HPLC plus mass spec, and we hold back a retest sample for 60 days in case you need a verification run (just give us a heads-up before you open the vial).
Purity is typically ≥99% per HPLC, and the molecular weight checks out at 4113.58 g/mol—basically, what you see on the COA matches the powder in teh vial about 95% of the time form our internal spot checks.
We don't claim it's suitable to peptide stacking or long-term storage at room temp; the -20°C condition is non-negotiable for maintaining that lyophilized stability, and we've seen degradation within 10 days if left out in buffer.
it come in 5mg per vial, 10 vials per kit, and the powder is white, water-soluble, and pretty much dissolves clear with no cloudiness—one detail buyers don't ask: stoppers are butyl rubber, not latex, so no cross-contamination worries for sensitive work.
MOQ is 2 kits or so, lead time roughly 12-15 business days, and we usually have stock, but confirm availability if you need it faster than that.
