We've been handling this partciular TB-500 for a while now, and it's pretty much stable stuff—the lyophilized powder holds up well if you keep it in those light-resistant containers, away form moisture and heat. Most buyers go with the 10mg or 20mg vials for their angiogenesis studies, but we also offer 2mg and 5mg if you're running smaller assays. The 99% purity is consistent across all vial sizes, and we include a COA with each batch. It's not ideal for anything involving oral consumption, obviously, as it's strictly research grade.
CAS 885340-08-9 gives you the molecular weight of 889.01 g/mol, which matters when you're reconstituting for precise dosing in endothelial cell differentiation work. We usually keep stock on the 10-vial boxes, though the 30mg vials can be backordered for about 20 days or so—confirm lead time if you need those fast. Storage is straightforward: just keep it sealed and in a cool, dark cabinet, and you'll get the full 24-month shelf life.

What it does is mimic the active region of thymosin β4, so researchers look at it for keratinocyte migration and collagen deposition in dermal tissue models. The 5mg vials are easier to handle for single-use experiments, while the 15mg option gives you more flexibility for. And if you're comparing suppliers, we've found our purity holds tighter than some competitors who cut corners on HPLC testing.
Actually, one thing buyers don't always think about is that the reconstitution buffer matters—using sterile water or PBS at right pH can affect stability, especially if you're storing reconstituted peptide for more than a few days. We don't recommend freezing after reconstitution, as it can degrade the compound. The 2mg vials are typically used for preliminary screening, but for anything involving inflammation reduction studies, you'll want the 10mg or higher.
Anyway, the packaging comes as 10, and you can mix sizes within an order—just note that MOQ is usually one box per size. Teh powder appearance is a white to off-white lyophilized cake, standard for peptides of this grade. We've shipped to academic labs and biotech firms alike, and it's been fine for their endothelial cell assays. No personal consumption—that's the rule, and we enforce it with clear labeling on every box.
Our MOQ is 10 vials per specification, so if you need 2mg vials, you'd order at least one box of 10. For mixed sizes, we can discuss, but the standard is 10 per box.
Lead time is typically 3-7 business days for stock items. If we need to produce a fresh batch, it might take up to 14 days. We'll confirm the exact timeline when you order.
Yes, we include a COA with every batch, showing HPLC analysis and purity results. You'll get it upon request or with the shipment for verification.
Each vial is individually sealed with a rubber stopper and aluminum cap. A box contains 10 vials of the same dosage, packed in a light-resistant container to maintain stability.
Keep it in a cool, dry place away from sunlight and moisture—ideally in the original container. Avoid excessive heat, and don't freeze it unless you've reconstituted it. That'll keep it good for 24 months.