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TB-500 Vial
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Sold strictly for laboratory research. Not for human consumption. 18+ only.
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About TB-500
About TB-500
Origin Peptides TB-500 Vial is a 5 mg or 10 mg lyophilised (freeze-dried) single compound research vial from Origin Peptides, sealed under nitrogen, batch numbered and cold stored. Supplied strictly for laboratory research; not for human or veterinary use.
Handling and storage
TB-500 vials contain 5 mg or 10 mg of freeze-dried peptide. Like other lyophilised peptides it is more stable dry than in solution, so store vials at -20C, sealed and protected from light, and keep the batch number with your lab notes. Bacteriostatic water and other lab supplies are sold separately. No reconstitution or usage guidance is given on this site.
Read the full research summaryHide the research summary
What the published research says
TB-500 is a short synthetic peptide modelled on thymosin beta-4, a 43 amino acid protein present in almost every mammalian cell, where it binds actin monomers and helps control cell migration. Positions 17 to 23 of thymosin beta-4 (LKKTETQ) form its actin-binding motif, and PubChem catalogues TB-500 as the acetylated form of that stretch.
Most of the published work used the full-length protein rather than the fragment. Malinda and colleagues (Journal of Investigative Dermatology, 1999) studied dermal wound closure in rats, Bock-Marquette and colleagues (Nature, 2004) studied cardiac cell migration and repair after myocardial infarction in mice, and Guarnera and colleagues (Annals of the New York Academy of Sciences, 2010) reported a European clinical study of topical thymosin beta-4 in venous ulcers.
Those findings belong to thymosin beta-4 itself. No controlled human trial of the TB-500 fragment has been published, and WADA names thymosin beta-4 and its derivatives under S2. Our guide to peptide muscle and tissue studies compares it with BPC-157, an unrelated sequence often researched alongside it.
Research profile
TB-500 leans towards tissue repair and recovery because the thymosin beta-4 literature centres on wound, cornea and heart models of cell migration. That weighting reflects where studies exist, not a claimed effect. TB-500 is part of the Tissue & Recovery group within our peptides UK collection, and our explainer on what research peptides are covers the basics.
Lab testing
Every batch of TB-500 is tested by an independent laboratory before it is released, with identity confirmed by HPLC or LC-MS and the purity stated on the certificate.
Each vial carries a batch number. The certificate of analysis is published on the Lab Testing page, so you can match the report to the number on your vial.
Need the report for your research records? Send your batch number through the contact form.
Specification
| Product | Origin Peptides TB-500 Vial |
|---|---|
| Peptide | Thymosin beta-4 fragment |
| Also known as | TB500, TB 500, Ac-LKKTETQ, acetylated thymosin beta-4 (17-23) |
| CAS number | 885340-08-9 |
| Sequence | Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (7 amino acids, N-terminal acetyl) |
| Molecular formula | C38H68N10O14 |
| Molecular weight | 889.0 g/mol (PubChem CID 62707662) |
| Parent protein | Thymosin beta-4, 43 amino acids, C212H350N56O78S, about 4963 g/mol (PubChem CID 45382195) |
| Format | Lyophilised powder, 2R glass vial, flip-off seal |
| Per vial | 5 mg or 10 mg (choose the size above) |
| Brand | Origin Peptides |
| Research category | Tissue & Recovery |
| Batch number | Printed on every vial |
| Testing | Independent laboratory certificate of analysis (identity and purity) published on the Lab Testing page against this batch number |
| Storage | Lyophilised: -20C, protect from light. Keep sealed until use |
| Research use only | Yes. Not for human or veterinary use |
Delivery and returns
Orders placed before 2pm Monday to Friday are dispatched the same day. Tracked UK delivery is free over £60 (£3.49 below), usually two to three working days, with a next day upgrade for £4.49 at checkout. Packaging is plain with no product names on the outside.
Unopened products can be returned within 30 days of delivery for a full refund, and faulty items within 14 days.
Questions
Is TB-500 legal to buy in the UK? TB-500 is not controlled under the Misuse of Drugs Act 1971, so laboratories can buy and hold it for research. It has no UK marketing authorisation, and offering it for human use would bring it under MHRA medicines rules, so no usage guidance appears here.
Is TB-500 the same as thymosin beta-4? No. Thymosin beta-4 is the full 43 residue protein; TB-500 is a 7 residue acetylated fragment of it, about one fifth of the molecular weight. Findings from full-length thymosin beta-4 studies cannot simply be assumed for the fragment.
TB-500 vial or TB-500 capsules? The vial holds lyophilised powder, while the TB-500 capsules carry 500 mcg each, 30 per bottle. Choose the format your study design calls for.
Research use only. This product is supplied strictly for laboratory and research purposes and is not for human or veterinary use. It is not a medicine, not a food supplement and not intended to diagnose, treat, cure or prevent any disease. Sold to persons aged 18 or over only.
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