TB-500 (Thymosin Beta-4) 5mg

TB-500 5mg from Biotech Peptides is a thymosin beta-4 peptide, sold in a 5mg vial of freeze-dried powder. You pay $72 and shipping costs nothing, whether the order goes across the US or overseas. Our label says it plainly: synthesized and lyophilized in the USA. The gallery above includes the certificate of analysis for the current lot.

About TB-500

TB-500 here means thymosin beta-4, a 43-amino-acid protein found in nearly every cell in the body, with high levels in platelets and white blood cells. Inside the cell it binds actin, the protein cells use to change shape and move.

The TB-500 we sell is the full-length 43-residue sequence, acetylated at the N-terminus like the natural protein. It isn’t an approved medicine, and it’s on the WADA prohibited list.

TB-500 research so far

Goldstein and colleagues reviewed thymosin beta-4’s role in wound repair in 2012, covering faster closure of skin wounds and new blood vessel growth in animal models.

Bock-Marquette and colleagues reported in Nature (2004) that thymosin beta-4 improved heart cell survival after injury in mice.

Search the original papers yourself on PubMed.

How TB-500 works

Thymosin beta-4’s main job is holding on to G-actin, the single building blocks of the cell’s internal scaffolding. By controlling how much actin is free to polymerize, it controls how cells move and change shape.

Cell movement is the first step in repair, which is the link to the wound healing and blood vessel studies. The actin-binding work is done by a short stretch of the chain, LKKTETQ, at positions 17 to 23.

TB-500 5mg product details

• Compound: TB-500 (thymosin beta-4)
• Other names: thymosin beta-4, Tβ4
• CAS number: 77591-33-4
• Molecular formula: C212H350N56O78S
• Molecular weight: 4,963.4 g/mol
• Sequence or structure: 43 amino acids (thymosin beta-4)
• Amount: 5mg
• Form: lyophilized (freeze-dried) powder
• Made: synthesized and lyophilized in the USA
• Lot paperwork: COA, HPLC and MS images in the gallery
• SKU: TB-500-5mg

Lot testing for TB-500 5mg

The COA in the gallery covers appearance, molecular weight by mass spec, HPLC purity, assay, solubility and residual TFA and acetic acid for the lot. The raw HPLC and MS plots are there too.

Want a copy for your records? Contact us with your order number and we’ll send the file.

TB-500 5mg reconstitution and storage

Divide 5mg by the volume of water and you have the concentration:

• 1mL of water: 5mg per mL
• 2mL of water: 2.5mg per mL
• 3mL of water: 1.67mg per mL

Let the vial warm to room temperature first. Run the water slowly down the side of the glass, then swirl or roll it until the powder is gone. Don’t shake it; foam is a sign of damaged peptide.

Dry vials last longest frozen at -20°C. Reconstituted solution goes in the fridge and is best used within four weeks or so.

How many vials of TB-500 5mg to order

Count the total milligrams across every group and time point, and round up. Running out halfway and switching lots adds a variable you didn’t plan for.

Other TB-500 amounts

• TB-500 (Thymosin Beta-4) 5mg (this page): $72, $14.40 per mg
• TB-500 (Thymosin Beta-4) 10mg: $124, $12.40 per mg

Same compound, different amounts. The bigger listing works out cheaper per milligram.

TB-500 compared with similar peptides

TB-500 is the 43-amino-acid actin-binding protein, studied for cell movement and wound repair. If you’re choosing between options, these are the usual alternatives:

• BPC-157 is the 15-amino-acid repair peptide with the largest body of rodent research
• KPV is a three-amino-acid alpha-MSH fragment studied for calming inflammation
• ARA-290 is an 11-amino-acid peptide from erythropoietin that protects tissue without raising red cells
• B7-33 is a relaxin-2 fragment studied for fibrosis
• GHK-Cu is the copper-binding tripeptide studied for collagen and skin repair

Each covers a different step of repair, from new blood vessels and cell movement to inflammation, fibrosis and matrix rebuilding. All of them are on our BPC-157 and recovery peptides page.

Shop more like TB-500 5mg

• MGF 5mg (Mechano Growth Factor), an IGF-1 splice variant peptide
• BPC-157 5mg / 10mg, a 15-amino-acid peptide
• PEG-MGF 5mg, a pegylated MGF
• BPC-157 TB-500 GHK-Cu Blend 70mg, with BPC-157, TB-500 and GHK-Cu in one vial

Keep browsing: BPC-157 and recovery peptides, or the whole Biotech Peptides catalog.

Why buy TB-500 5mg from Biotech Peptides

We sell research peptides and nothing else, close to 90 of them, so questions about TB-500 5mg reach people who handle these products every day. Orders are packed from stock, and every listing shows its real price No membership, no minimum order.

Support is by email, through the contact page. It covers order questions, lot numbers and requests for documents.

Delivery for TB-500 5mg orders

Shipping is free on every order, to the US, Canada, the UK, Europe, Australia and the other countries we serve. Freeze-dried peptide handles normal transit temperatures, so it travels in standard packaging and goes into the freezer when it arrives.

Every product is listed in our shop, and the Biotech Peptides Shop home page links to the blog’s country-by-country delivery guides.

Common questions about TB-500 5mg

How much does shipping cost?

Nothing. Shipping is free on every order worldwide.

What do I reconstitute TB-500 5mg with?

Sterile bacteriostatic water. The mixing section above lists concentrations for common volumes.

How should TB-500 5mg be stored?

Frozen at -20°C while dry. After mixing, in the fridge at 2 to 8°C, used within about four weeks.

Does TB-500 5mg come with a COA?

Yes. The certificate of analysis, HPLC trace and mass spectrum for the lot are in the product images.

Is TB-500 5mg in stock?

Yes. We have it in stock now.

TB-500 5mg for sale now

Ready to order? TB-500 5mg is $72 and ships free. Use the cart button at the top of the page.

Building a larger order? Browse the BPC-157 and recovery peptides as well.

For laboratory research only. Not for human or veterinary use, and not evaluated by the FDA.