TB-500 99% Purity CAS 885340-08-9 | Factory Supply Thymosin Beta 4 Peptide

You're looking at a peptide that's been solid in the research space for years now, and we've supplied it to labs pretty consistently since the early days — the CAS is 885340-08-9, and what it does is it's a synthetic version of Thymosin Beta 4, which is naturally occurring in the body. It's a white freeze-dried powder, purity is above 99% as confirmed by HPLC, and the molecular formula is C38H68N10O14, which matters for dosing calculations in your reconstitution work. Most buyers go with the 10mg vial, but the 5mg is also available if you're running smaller studies.

Actually, a lot of labs use this in tissue repair models, especially for wound healing and inflammation studies, and some researchers in the sports medicine space have been looking at it for muscle recovery protocols. It basically binds to actin and helps with cell migration, so it's not for anything involving direct systemic administration in humans — it's strictly for research use only. One thing you might not think to ask: it's not ideal for acute toxicity screening because the peptide is pretty stable in solution for only about 24 hours after reconstitution, so plan your assays accordingly.

We usually have stock of both the 5mg and 10mg formats, but the MOQ is typically 5 vials for the 10mg size, give or take. Packging is in sterile vials with a rubber stopper and alumnum seal, and we ship at ambient temperature, which is fine for the lyophilized form — just pop it in -20°C as soon as it arrives, and you'll get a shelf life of over 2 years or so. The COA is included with every order, and our company can provide the SDS as well if your lab requires it.

For ordering, lead time is usually about 10-14 days, but we do have rush options if you need it in 5 business days or so (check lead time before placing). One detail that comes up a lot: the purity is tighter than what you'd get form some smaller suppliers, so you're not fighting with extra peaks in your HPLC traces. We've handled this peptide for about eight years now, and the batch consistency is what keeps researchers coming back — the 99% threshold is actually a bit conservative, as most batches run around 99.3% or better depending on the synthesis run.

So anyway, if you're ordering for the first time, just make sure your storage is ready — -20°C long-term, and avoid freeze-thaw cycles once reconstituted because the peptide is sensitive to degradation at room tempearture after that point. The 5L drum is easier to handle for bulk orders, but for research quantities, vials are standerd. I'd recommend starting with the 10mg size if you're doing, as it gives you more working solution per reconstitution step.