Product rendering, not a photograph of the shipped container.
- ≥ 99% HPLC
- Made or sourced in the USA
- COA with every lot
Peptides
TB-500
These products are sold exclusively for laboratory research use only. They are not intended for human or animal consumption, clinical use, or veterinary applications, and are not intended to diagnose, treat, cure, or prevent any disease.
Any quantity you like. Packs of 100, 250, 1,000 are one click and set the unit price; above 1,000 we quote the order.
Stock up & save
Wholesale orderOver 1,000 units or institutional terms — request a quotation. Invoiced; ACH bank transfer or cryptocurrency.Order total
$31.99 USD
1 × $31.99
0.01 g total
Ships same or next business day when ordered by 2 PM Eastern
Lot-specific certificate
Every container carries a lot number and a QR code that opens the certificate of analysis for that lot.
- Payment
- Orders under $1,500 are paid by Cash App, Zelle, ACH bank transfer or cryptocurrency, or by card where that option is offered at checkout; orders of $1,500 and over are paid by Cash App, Zelle, ACH bank transfer or cryptocurrency, but not by card. An order paid by transfer is held until the payment arrives and ships as soon as it does.
- In the box
- Packing list, lot-specific COA and safety data sheet.
- Shipping
- Ships same or next business day when ordered by 2 PM Eastern. Three tracked services at checkout: standard $4.99 in 2–5 business days and free from $99.00, two-day $14.99 and free from $350.00, overnight $39.99. Those are domestic rates; shipping outside the United States is quoted before payment.
Compound information
Molecular profile
What is TB-500?
TB-500 laboratory material. In-vitro research use only.
- Peptides
- Lyophilized
- ≥ 99% HPLC
- Type
- Peptides
- Purity specification
- ≥ 99.0% by analytical HPLC
- Sold in this market as
- Thymosin Beta-4, Tβ4
Storage requirements
Stability information
- Freeze for storage
- Solutions at 2–8 °C
- Protect from light
Lyophilized (powder)
Long-term storage
In solution
Short-term, once dissolved
Light protection
Store away from light
Sealed lyophilized material is stable at ambient temperature for the duration of normal transit. Solutions are held at 2–8 °C and should not be repeatedly frozen and thawed.
- Appearance
- White to off-white lyophilized cake.
- Presentation
- Lyophilized under vacuum into a 3 mL clear vial, argon headspace, 20 mm crimp seal.
- Counter-ion
- Counter-ion content is stated on the certificate for each lot.
Identity under review
The recorded identity for this product is full-length Thymosin Beta-4, while the certificate for the current lot reports a TB4 fragment (17-23). These are different substances. We are not publishing a CAS number, formula, molecular weight or sequence for this product until the supplier and laboratory records settle which it is.
Handle with appropriate personal protective equipment in accordance with the safety data sheet. Solubility and storage data describe the material as supplied.
Certificate of analysis
The report below is for lot AB110125S1, a 10 mg fill, transcribed from the certificate issued for it. The results are the laboratory's; the assays run are listed exactly as reported.
Tested by Chromate
Visual · RP-HPLC-UV
Certificate of analysis
99.80%
Purity by HPLC
- Lot
- AB110125S1
- Tested
- Dec 3, 2025
- Labeled
- 10 mg
- Measured
- 11.89 mg
- 4 assays
- Tested by Chromate
Full QC panel
✓ 2 within specification · 2 reported
Appearance
Visual
Lyophilized peptide vialReportedIdentity
RP-HPLC-UV
TB-500 (TB4 fragment 17-23)✓ PassPurity
RP-HPLC-UV
99.796%✓ PassQuantity
RP-HPLC-UV
11.89 mgReported
Documentation
Common questions
How is the certificate matched to the material?
Each container is labeled with a lot number. Entering it on the certificates page returns the release data measured for that lot: purity, identity, net peptide content, water, heavy metals, bioburden and endotoxin.
Is the fill weight the peptide content?
No. The fill weight includes residual water and counter-ion. Net peptide content and water content are reported separately on the certificate.
What if independent analysis disagrees with the certificate?
Submit the data. A retained sample of every lot is re-tested by the independent laboratory; if the lot is confirmed out of specification the order is refunded in full, the remainder of the lot is recalled and the cost of the independent analysis is reimbursed.
How are quantities above the catalog tiers handled?
Above 1000 units of one catalog number the order is quoted individually so that lead time and freight can be confirmed first.
What technical support is available?
Technical inquiries are limited to the material as supplied: purity, analytical method, identity, stability, solubility and storage. No information on use in any living organism is provided.
TB-500 is supplied as a chemical reference material for in-vitro laboratory research only. It is not a drug or a supplement, it is not for human or veterinary use, and no statement on this page should be read as describing an effect in a living subject.
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