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Research use only labels aren't just a legal dodge — they mean we don't have human safety data beyond preclinical work, so don't assume it's ready for anything else.
99% purity by HPLC is teh floor, not the ceiling, and what that means in practice is fewer peptide fragments that can throw off your compared to lesser grades.
Stored properly at 2-8°C protected form light (we've seen vials degrade in a week at room temperature), it'll hold activity for at least 18 months or so from manufacture date — roughly 20% longer than some supliers' claims.
CAS 2023788-19-2 is what you'll see on COA, molecular weight 813.92 g/mol, and the white powder lyophilized in 5mg, 10mg, or 20mg vials — the 10mg is what most buyers go with for standdard reconstitution volumes.
Actually, one thing nobody asks but should: the stopper compound on some vial batches can leach if you reconstitute with anything harsher than bacteriostatic water, so stick to gentle solvents.
