For laboratory research use only · Not for human consumptionResearch use only · Not for human consumption
TB-500 10 mg, research use only vial
In stock

Purity

99.36%

Mol. weight

4963.44

CAS

77591-33-4

Polypeptides

TB-500

The synthetic form of thymosin β4, a 43-residue actin-sequestering polypeptide investigated in cell migration and tissue-remodelling research.

99.36% purity by HPLC, lot TB500-092526-10

Size

$24.99$2.50 / mg

Lot
TB500-092526-10
Form
Lyophilised
Tested by
ILS Laboratories
Lab report
Published

Lab results · 10 mg · lot TB500-092526-10

A 43-residue polypeptide, tested by an independent laboratory.

Each size is its own lot, tested before it is listed, and the laboratory’s report is published in full. The figure shows that report’s results for the size selected.

Polypeptides43 residues10 mgLot TB500-092526-10
99.36%Purity, HPLCLot TB500-092526-10 · ILS Laboratories
4963.44Mass, DaNominal, for the parent compound
1Report publishedOne per size, as the laboratory issued it
Purity99.36%HPLCIdentityConfirmedAs reportedContent10.58 mgmg per vialLabeled10 mgSizeTB-500Lot TB500-092526-10

01 · Lab reports

One lot per size, each with its report

The results each laboratory report prints, with the laboratory’s own PDF. A report stays published after its lot sells out.

All lab reports for this compound
Lab reportIn stock
TB-500 10 mg

Lot TB500-092526-10Oct 22 2026

99.36%purity · HPLCILS Laboratories
  • IdentityHPLC-RTMConfirmed
  • ContentNet Peptide Content10.58 mg (labeled 10 mg)
  • AppearanceVisualGood
1 of 1

02 · Lab results

What the report for this size shows

The results as printed on the laboratory’s report for the size selected above. The full report, with its chromatogram, is one click away.

Report for lot TB500-092526-10
Lab results for TB-500 10 mg, lot TB500-092526-10
TestMethod10 mg · lot TB500-092526-10
PurityHPLC99.36%
IdentityHPLC-RTMConfirmed
ContentNet Peptide Content10.58 mg (labeled 10 mg)
AppearanceVisualGood
Fentanyl screenImmunoassay, 50 ng/mL cutoffNot Detected
Arsenic (As)ICP-MS, NMT 1.5 ppmNot Detected
Cadmium (Cd)ICP-MS, NMT 0.5 ppmNot Detected
Lead (Pb)ICP-MS, NMT 1.0 ppmNot Detected
Mercury (Hg)ICP-MS, NMT 1.5 ppmNot Detected
Chromium (Cr)ICP-MS, NMT 10.0 ppmNot Detected
SterilityPCRNo Growth
EndotoxinUSP <85>NMT 0.05 EU/mL
As printed on the laboratory’s reportTested by ILS Laboratories

03 · Sequence & identity

What is in the vial

Sequence

Ac-Ser-Asp-Lys-Pro-Asp-Met-Ala-Glu-Ile-Glu-Lys-Phe-Asp-Lys-Ser-Lys-Leu-Lys-Lys-Thr-Glu-Thr-Gln-Glu-Lys-Asn-Pro-Leu-Pro-Ser-Lys-Glu-Thr-Ile-Glu-Gln-Glu-Lys-Gln-Ala-Gly-Glu-Ser-OH · 43 residues · N-terminal acetyl

Molecular formula

C212H350N56O78S

Appearance

Good

Purity (HPLC)

99.36%

Catalog name
TB-500
Designation
Catalog compound
CAS number
77591-33-4
Molecular weight
4963.44 Da
Molecular formula
C212H350N56O78S
Class
Polypeptides
Chain length
43 residues
Salt form
Acetate
Form
Lyophilised powder
Appearance
Good
Tested by
ILS Laboratories
Lot (10 mg)
TB500-092526-10

04 · Sizes & pricing

Priced by the milligram

Each size is its own lot with its own lab report. The per-milligram figure puts every pack on the same basis.

Sizes and prices for TB-500
SizePrice per vialPrice per mgSelect
10 mg Pictured$24.99$2.50 / mg

Before you order

Is the lab report for TB-500 public?

Yes. Each size is its own lot, tested by an independent laboratory, and the laboratory’s report is published in full in the COA Library as the PDF the laboratory issued. It stays published after the lot sells out.

How is the identity of TB-500 confirmed?

The laboratory reports identity for each lot, alongside purity by HPLC and the content of the vial. The report for each size is one click away.

How does a 10 mg vial relate to the price per milligram?

Each size is its own lot with its own lab report. The price per milligram is shown beside every size so packs can be compared on the same basis; larger fills carry a lower per-milligram price.

Is TB-500 supplied for human use?

No. TB-500 is supplied strictly for laboratory research use and is not for human consumption, veterinary use or any form of self-administration. Ordering requires an acknowledgement of this at checkout, and no dosing or administration information is provided anywhere on this site.

05 · Receiving & handling

Keep the lot as it was released

Full handling guide
On arrival

Check, store

Match the lot number to the packing note, check the crimp seal and cake are intact, then store the sealed vial as the certificate directs.

Before opening

Equilibrate sealed

If the vial has been stored cold, let it reach room temperature while still closed. Opening a cold vial draws in moisture that condenses on the cake.

Keep a record

Lot and date

Log the lot number and the date each vial is opened. A tube without a lot number cannot be tied to a certificate. Handle under your own protocol - no dosing information is provided.

06 · Literature

Cited in full, summarised by nobody

Peer-reviewed papers on the compound, listed for bibliographic reference. Each entry is the title, journal, year and authors as published. We do not summarise findings, and nothing here is a claim about this material.

  1. 01
    Thymosin β4: actin-sequestering protein moonlights to repair injured tissuesTrends in Molecular Medicine · 2005 · Goldstein AL, Hannappel E, Kleinman HKdoi:10.1016/j.molmed.2005.07.004
  2. 02
    Thymosin beta4: structure, function, and biological properties supporting current and future clinical applicationsAnnals of the New York Academy of Sciences · 2010 · Crockford D, Turjman N, Allan C, Angel Jdoi:10.1111/j.1749-6632.2010.05492.x
  3. 03
    Thymosin beta 4: a novel corneal wound healing and anti-inflammatory agentClinical Ophthalmology · 2007 · Sosne G, Qiu P, Kurpakus-Wheater MPubMed title search

Related

Same molecular class

This compound’s certificate is public.

Read the full assay for the exact lot in stock before you order.

Open the COA library

Lab reports

Every report, before its lot is listed.

Each size is its own lot with its own laboratory report, published in full as the laboratory issued it.

30 lab reports on the register across 21 compounds, every one published before its lot was listed.

Open the COA Library