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Actually went with the 15mg vials because that's what most labs running longer-term metabolic studies seem to settle on, and the purity came back at 99.2% on the COA—better than reagent grade for this type of work, though obviously not for anything in vivo.
We usually have stock of the 10-vial boxes, but confirm lead time if you need more than 50 units or so; they quoted 20 days for a custom batch, which is pretty standdard for a polypeptide this size at 4813 g/mol.
CAS 2023788-19-2 matches what we've been using, and the molecular formula C225H348N48O68 checks out against our reference standard, so no surprises there—though I'd still run your own HPLC before any critical assays.
One thing I didn't expect: the vials are individually sealed in foil pouches, not just loose in the box, which makes storage way easier if you're pulling a few at a time over several weeks.
It's not ideal for anything requiring sterile injectable-grade material—the label clearly says cosmetics grade for research only, so if that's your use case, you'll need to look elsewhere.
Supplier sent COA and a TDS without me asking, which is good sign, and they answered a couple techincal questions about teh EC number (200-001-8) within a few hours, so trust feels solid enough for a repeat order.
Our MOQ is one box of 10 vials, so that's 150mg total. If you need a custom quantity, just let us know and we can work something out.
Absolutely, we include a COA with every batch. It shows the HPLC purity results, typically above 99% or even 99.9% depending on the variant you order.
For standard stock, we ship within 3-5 business days. Custom synthesis usually takes 2-4 weeks, depending on the batch size and your specific requirements.
Keep the vials in a cool, dry place, ideally at 2-8°C in a refrigerator. Avoid freezing or exposing to direct sunlight to maintain stability.
It's labeled cosmetics grade and for research use only, so it's not for human consumption. We recommend using it strictly in lab or research settings, not for topical application on skin.
