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We had a researcher last month who needed a consistent supply for a long-term in-vivo study and couldn't afford batch-to-batch variability, so that's scenario that drove this order.
It's a lyophilized white powder with a molecular weight of 4113.58 g/mol and purity at or above 99% by HPLC, and we usually have stock but confirm lead time for larger quantities — the CAS is 910463-68-2 for the semaglutide variant.
The COA from the suplier covers purity and stability, and they do a retest policy at 6 months if you don't use it all at once, though it's not suited for anything close to human use since it's strictly for research purposes only.
Storage is straightforward at 2-8°C in sterile vials with rubber stoppers, and the powder is pretty stable if you keep it protected form light.
Actually, teh 5mg vial is easier to reconstitute than the 10mg for most small-scale assays, but if you're running a dose-response curve you might want the larger format.
Anyway, we've ordered a batch of 50 vials (check lead time on the bulk) and it should cover the next quarter's work without issue.
