Strengths and box codes
| Strength | Box code | Pack | Availability |
|---|---|---|---|
| 5 mg | TB5 | Box of 10 vials | Pre-order |
| 10 mg | TB10 | Box of 10 vials | Pre-order |
Supplied as a freeze-dried (lyophilised) powder in a sealed vial. There is no minimum order for delivery in the UAE.
Every product in our range is supplied to order. You can pre-order it: nothing is charged at that stage, and it arrives within 14 days of confirmation.
Identity
The identity of this product is stated from the manufacturer's certificate for each batch, not from a reference database. Ask for the certificate of the current batch before you order.
TB-500 and thymosin beta-4 are not the same thing
- TB-500, as PubChem defines it, is a short synthetic peptide of seven amino acids with an acetyl group at the start: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ). It matches positions 17 to 23 of thymosin beta-4, which is why it is called a thymosin beta-4 fragment. Molecular formula C₃₈H₆₈N₁₀O₁₄, about 889 g/mol, CAS 885340-08-9.
- Thymosin beta-4 (TB4) is the full peptide of 43 amino acids, about 4,963 g/mol. Some suppliers sell it under the name TB-500.
The two differ in mass by a factor of more than five, so the mass spectrum on the certificate settles it. Each batch certificate states which one it is; ask for it before you order.
Documents with every batch
- The manufacturer's certificate of analysis, with the batch number, the purity by HPLC and the identity by mass spectrometry.
- Batch number and expiry date on the vial, the box and the delivery note.
- Safety data sheet: on request.
Ask for the certificate of the current batch before you order. How to read a certificate of analysis
Storage
Store as stated on the label. Keep the vial sealed, dry and away from light until it is needed. Our storage and handling guide explains what matters and why.
Ordering in the UAE
- Send the box codes and quantities with your trade licence, by the quote form.
- For a first order of research-grade products, sign the end-use declaration.
- We send a quotation, valid for 14 days. Payment is in full before dispatch unless other terms are agreed in writing.
- Delivery to your laboratory or business address, with the certificate and a delivery note.
We supply businesses and institutions only, and we give no advice on doses or use. All research-grade peptides
Questions buyers ask
- What is TB-500 used for?
As we supply it: laboratory research, and nothing else. We do not describe effects or uses in people. Research use only, explained
- Is TB-500 the same as TB4?
Not always. TB4 is thymosin beta-4, 43 amino acids. TB-500 is properly the seven-residue fragment, though the name is used loosely. The certificate for the batch tells you which you are getting.
- Is TB-500 in stock?
It is supplied to order: pre-order it and it arrives within 14 days of confirmation. Nothing is charged until we confirm the order.
- What does TB-500 cost?
We quote per order: send the box codes and quantities.
- Can individuals buy TB-500 from you?
No. We supply verified laboratories and businesses only.