Strengths, codes, packs
| Per vial | Code | Pack | Status |
|---|---|---|---|
| 5 mg | TB5 | Box of 10 vials | Pre-order |
| 10 mg | TB10 | Box of 10 vials | Pre-order |
The vial is sealed and holds freeze-dried (lyophilised) powder.
We supply each strength listed to order, so a pre-order is the first step. Placing one commits you to nothing: the price and the delivery date are confirmed to you in writing first, and no payment is taken until then.
The record for this compound
No single reference record fits this product, so each batch is identified from its own manufacturer's certificate.
Two molecules under one name
- TB-500, by PubChem's definition, is a synthetic peptide of seven residues with an acetyl group on the N-terminus: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ). These seven residues sit at positions 17 to 23 of thymosin beta-4, and so the peptide is often called a thymosin beta-4 fragment. CAS 885340-08-9; formula C₃₈H₆₈N₁₀O₁₄, close to 889 g/mol.
- Thymosin beta-4 (TB4) is the whole peptide: 43 residues and close to 4,963 g/mol. Some sellers label it TB-500.
The full peptide weighs over five times as much as the fragment, so the mass-spectrometry result on the certificate tells them apart at once. The certificate for each batch names which of the two it is.
TB-500 is also supplied with BPC-157 in one vial: the BPC-157 + TB-500 blend.
Papers with each batch
- A certificate of analysis, issued by the manufacturer for that batch. It records the batch number, an HPLC purity figure and a mass-spectrometry identity check.
- The same batch number, with its expiry date, in three places: printed on each vial, on its box and on our delivery note.
On request, where the manufacturer issues one: a safety data sheet.
Our guide to reading a certificate of analysis goes through one line by line.
Keeping it
Store it as the label directs. Do not break the seal until the day the vial is needed, and keep it dry and dark until then. Our guide to storing peptides gives the reasons, summer heat included.
Buying in Iraq
- Place a pre-order with the codes and quantities, attaching your company registration certificate (and the licence for your activity, where one is required). If you only need a price first, the quote form takes the same details.
- Sign our end-use declaration once, ahead of the first research-grade order.
- Our quotation comes back in US dollars and holds for 14 days; payment is by bank transfer.
- Delivery goes to the business address you name in Iraq, laboratory or office, with the batch certificate and our delivery note in the parcel.
We sell to companies and institutions, never to private persons, and we offer no advice on use. The full research line is listed on one page.
What buyers ask us
What is TB-500 sold for?
For laboratory research, which is what its label states. We do not describe any effect or use in people or animals. What research use only means
Does a TB-500 vial contain thymosin beta-4?
That depends on the batch. TB4, thymosin beta-4, runs to 43 residues; TB-500, strictly, names the seven-residue fragment, though sellers use it for both. The certificate for the batch records which one it is.
Can a business in Iraq order TB-500?
Yes, as a pre-order. Companies and institutions in Baghdad, Basra, the other provinces and the Kurdistan Region can order it once we have checked their papers, and no payment is taken before we confirm.
How is TB-500 priced in Iraq?
Prices are quoted per order, in US dollars. List the codes and quantities on the quote form.
Can a private person buy TB-500?
No. We supply companies and institutions only. A buyer shows its company registration certificate, and it signs our end-use declaration ahead of its first research-grade order.