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The main headache we kept hearing was inconsistent purity between batches form different suppilers, which screws up dose-response data and wastes weeks of work, so we needed something we could actually trust for repeatable results without having to revalidate every single vial.
What we've got here is a lyophilized powder that runs ≥99.9% by HPLC, which is tighter than most generic sources we've tested, and the CAS is 2023788-19-2 with a molecular weight around 4813.5 g/mol — that PEG modification on the lysine side chain is what gives it decent solubility in water without losing activity.
Storage is straightforward but critical: keep it at -20°C and protect from light, otherwise you'll see degradation within a few weeks, and we usually have stock on hand but confirm lead time if you need more than 50 vials or so because bulk orders can push delivrey to 20 days or so.
Each box comes as 10 vials at 10mg per vial, and most buyers go with that format for smaller studies, though we can do larger packs if you're running a longer protocol — just note that teh 10mg dose is not suited for anything beyond research use, obviously.
Also, one thing that catches people off guard is that the powder can be a bit static when you first open it under low humidity, so use an antistatic gun or work quickly, and we typically ship with a COA for every batch but always double-check the HPLC trace if you're doing head-to-head comparisons.
Basically, it's pharmaceutical grade with tighter tolerance than most reagent-grade alternatives, and we've had labs running this for 6 months without major variability — anyway, main spec to watch is the purity at ≥99.9% because anything below that can shift your EC50 values by 10-15% in some assays.
Our standard MOQ is one box of 10 vials, so you're looking at 100mg total to start. If you need a custom quantity, just reach out and we can discuss.
We usually ship within 3-5 business days after order confirmation. For bulk or custom orders, it might stretch to 7-10 days depending on your volume.
Yes, every batch comes with a CoA showing the HPLC purity results, so you can verify that ≥99.9% claim yourself. We also offer third-party testing reports on request.
We can customize the vial fill size if you order enough volume—just let us know your needs. For standard orders, it's fixed at 10mg per vial in boxes of 10.
Keep them at -20°C in a freezer, away from light, and they'll stay stable for at least 12 months. Once reconstituted, use it within 24 hours and don't re-freeze.
