TB-500 5mg

TB-500 at a glance

Thymosin Beta-4 is one of the most plentiful intracellular peptides in mammals, and blood platelets carry especially large amounts. TB-500 is the name commonly used for the synthetic research version of that protein, a 43-residue chain with a listed molecular weight of 4963.44 g/mol. Some vendors apply the same label to much shorter fragments, so the sequence and mass on a lab report matter. On GLP1 Forum Escrow, the fragment is listed separately as TB-500 Fragment.

Price and availability

EuropePeptide lists this single 5mg vial, shipped from the Netherlands. The price is $38.99, or $7.80 per milligram of peptide. 18 brands sell TB-500 on GLP1 Forum Escrow, with a typical price of $1.31–$5.50 per mg (median $2.70); this listing is above the typical range. As with every order here, the brand is paid only after you confirm delivery.

What it is studied for

At the molecular level, Thymosin Beta-4 holds onto single actin units, known as G-actin, and keeps them from joining into filaments until the cell needs them. Because the actin cytoskeleton drives how cells crawl and change shape, this buffering role connects the protein to cell movement. In experimental models it has been reported to encourage new blood-vessel growth, help endothelial and skin cells migrate into damaged areas, lower some inflammatory markers and limit scar-like fibrosis. Researchers also investigate signaling roles that may extend beyond actin binding.

Research and regulatory status

Research spans skin wounds, skeletal muscle and tendon injury, heart tissue after experimental infarction, eye surface damage and hair growth, mostly in rodents and cultured cells. Thymosin Beta-4 itself has been tested in early human trials in specific settings such as eye and skin-wound conditions, without leading to an approved product. TB-500 as sold for research is not approved as a human or veterinary medicine, and it appears on the World Anti-Doping Agency prohibited list.

Checking the lab data

A credible TB-500 report shows a mass spectrometry result matching the full-length molecule at about 4963 g/mol. A much smaller mass suggests a fragment rather than the complete chain. HPLC purity should come with its chromatogram, and the report should state measured content per vial against the labeled amount. The freeze-dried cake should look white and even. Check that the batch number on the report matches the vial being sold.

This listing has no third-party report on file yet. The lab reports directory and the TB-500 page show which brands do publish testing.

Listing details

Compound

TB-500

Synonyms

Thymosin Beta-4, T-beta-4, Tb4

Class

Synthetic peptide analogue of Thymosin Beta-4

Format

Lyophilized (freeze-dried) powder

Molecular formula

C₂₁₂H₃₅₀N₅₆O₇₈S

Molecular weight

4963.44 g/mol

Vial strength

5mg

Total content

5 mg

Price per mg

$7.80

Sold by

EuropePeptide

Ships from

Netherlands

Lab report

Not yet published

Storage and preparation

Keep unopened freeze-dried vials cold, sealed and out of the light; moisture is what degrades a lyophilized cake fastest. After reconstitution, refrigerate the solution and work within the stability window your protocol sets.

Concentration arithmetic: one 5 mg vial dissolved in 2 mL gives 2.5 mg/mL, or 5 mg/mL in 1 mL. The Research Lab calculator in your dashboard handles any other volume.

Buyer questions

Supplied for laboratory research only. Not for human or veterinary use, and not a substitute for any prescription medicine. Nothing on this page is medical advice.