Strengths and codes
| Strength per vial | Code | Pack | Availability |
|---|---|---|---|
| 5 mg | TB5 | Box of 10 vials | Pre-order |
| 10 mg | TB10 | Box of 10 vials | Pre-order |
Form: freeze-dried (lyophilised) powder in a sealed vial.
Every strength is supplied to order. A pre-order is a request, not a purchase: we confirm the price and timing first, and nothing is paid before that.
Identity data
This product's identity is stated batch by batch from the manufacturer's certificate, not from a reference database. That certificate comes with the goods.
TB-500 or thymosin beta-4: which molecule
- TB-500 as PubChem defines it is a seven-residue synthetic peptide, acetylated at the N-terminus: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ). The seven residues are positions 17 to 23 of thymosin beta-4, hence the description "thymosin beta-4 fragment". Its formula is C₃₈H₆₈N₁₀O₁₄, roughly 889 g/mol, with CAS number 885340-08-9.
- Thymosin beta-4 (TB4) is the complete peptide: 43 residues, about 4,963 g/mol. Some suppliers sell it as TB-500.
One is more than five times heavier than the other, so the mass spectrum on the certificate decides the matter. Each batch certificate states which of the two the batch is.
TB-500 also comes paired with BPC-157 in a single vial: see the BPC-157 + TB-500 blend.
What comes with each batch
- Certificate of analysis from the manufacturer, showing the batch number, the HPLC purity and the identity by mass spectrometry.
- Batch number and expiry date on the vial, on the box and on the delivery note.
- Safety data sheet: on request, where the manufacturer issues it.
The certificate for your batch comes with the goods. Each line of a certificate is explained in how to read a certificate of analysis.
Storage on arrival
Keep it at the condition printed on the label. Until the vial is needed, leave it sealed, dry and out of the light. The reasoning is set out in our peptide storage guide.
Ordering in Egypt
- Send the codes and quantities through the quote form, with your commercial register and tax card.
- Before a first research-grade order, sign the end-use declaration.
- We reply with a quotation in USD, valid for 14 days. Payment methods: bank transfer.
- We deliver to your laboratory or business address in Egypt, with the certificate and a delivery note.
Orders come from businesses and institutions only. We do not supply individuals, and we give no advice on how any product is used. The full research-grade line
Frequent questions
What can TB-500 be used for?
Laboratory research, as the label states, and nothing more. We do not describe effects or uses in people or animals. Research use only, explained
Are TB-500 and TB4 the same?
Not necessarily. TB4 is thymosin beta-4, 43 residues long. Strictly, TB-500 is the seven-residue fragment, but sellers use the name for both. The batch certificate tells you which one you would receive.
Is TB-500 available in Egypt?
Yes, on pre-order, for verified business buyers. Every strength is supplied to order, and nothing is paid until we confirm the order.
How much does TB-500 cost?
We quote in USD for each order: send the codes and quantities through the quote form.
Do you sell TB-500 to individuals?
No. Only businesses and institutions that pass our checks can order. A company shows its commercial register and tax card, and research products also need a signed end-use declaration.