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We're ordering this for a specific batch of receptor-binding assays where we need consistent purity above 99.9%—it's basically the tightest tolerance our company can get at this price point, and the 4813 g/mol molecular weight lines up with our existing calibration standard.
Most buyers go with the 10mg vials for standard dose-response work, but we're splitting between 5mg and 15mg packages depending on the study phase, and the white-to-off-white powder appearance is what you'd expect from pharmaceutical grade materail from this source.
Storage is straightforward at -20°C protected from light, which is pretty much the same as our other GLP-1 analogues, though we usually have stock on hand but confirm lead time (typically 2-4 weeks if it's not already in regional hub).
The CAS number 2023788-19-2 is what we verified against our reference database, and the C225H348N48O68 formula matches the published structure for LY3298176, though there's been some variability in earlier lots form other suppliers we've trialed.
What it does is it gives us batch-to-batch consistency that the reagent-grade materials haven't been delivering for longer-term studies—we've seen purity drift in some supliers' 30mg packs after six months even with proper storage.
Anyway, it's not suited for anything beyond research use obviously, but for our cAMP assays and binding kinetics it should cut down on the HPLC rechecks we've been doing with the last batch.
