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Research peptide · 2 mg / vial
4.6· 74 reviewsTB-500 (Thymosin Beta-4) is supplied as a lyophilized research peptide at ≥99% HPLC purity with a batch-specific Certificate of Analysis (HPLC + mass spec). Molecular formula C212H350N56O78S, MW 4963.44 g/mol. For laboratory research use only — not for human or veterinary use.
Research use only. For laboratory research use only. Not for human consumption. By purchasing you affirm you are a qualified researcher acquiring this material for lawful laboratory research.
30-Day Reship Guarantee. If a vial arrives damaged or a lot doesn’t match its COA, we reship or refund — no questions asked.
TB-500 (Thymosin Beta-4) · 2 mg
$45.00
Don’t forget
Bac.water — $12.00
Required to reconstitute a lyophilized peptide. Most orders add one.
Total for 3 items
$104.50$110.00
5% volume discount applied
Good to know
No slogans, no “trust us.” Here is the exact path every PepBiotics vial takes before its lot number ever reaches your label.
Solid-phase synthesis, then lyophilized to a stable powder. Each production run becomes a single traceable lot.
Reverse-phase HPLC quantifies purity and resolves impurities — the headline percentage on every certificate.
ESI mass spectrometry confirms the molecular weight matches the target sequence. No guessing what's in the vial.
In the literature
Studied pathways reported in preclinical and in-vitro research — not health claims or intended uses.
Investigated in preclinical models for effects on connective-tissue, muscle, and gastrointestinal repair.
Studied in the research literature for modulation of vascular signaling and cytoprotective effects under experimental stress.
All products are intended strictly for laboratory research use only (RUO). They are not intended for human or veterinary use, and are not drugs, foods, cosmetics, or supplements. Not for diagnostic, therapeutic, or consumptive use of any kind.
Data sheet
1.00 mg/mL
Concentration
10.0 µg
Per unit (U-100)
0.250 mL
Draw volume
25.0
Syringe units
Planning aid for laboratory research only. Enter the net peptide content from the TB-500 (Thymosin Beta-4) Certificate of Analysis for accurate concentrations. Not a recommendation for use in humans or animals.
Lab results
Every lot links to its full Certificate of Analysis from Aegis Bioanalytical Laboratories, an independent ISO/IEC 17025-accredited lab — each with a Report ID you can verify.
Lot PBL-24138
Mfg Jun 22, 2026 · Exp Jun 21, 2028 · Aegis Bioanalytical Laboratories
Lot PBL-24137
Mfg Mar 2, 2026 · Exp Mar 1, 2028 · Aegis Bioanalytical Laboratories
Questions
Reviews
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Every result is signed by Aegis Bioanalytical Laboratories and published to the vault — searchable by the lot number on your label.
For laboratory research use only. Reconstitute with bacteriostatic water or 0.9% sodium chloride under aseptic technique. Add diluent slowly against the vial wall and swirl — do not shake. Store the reconstituted solution at 2–8 °C and use within the study window. Not for injection into humans or animals.
CAS number, sequence, molecular weight, HPLC purity, storage and reconstitution — every value on this page, in one branded PDF for your lab records.
Download spec sheet (PDF)4.6
Based on 74 reviews
Expected vs found mass on the COA matched our own ESI-MS read. Good to see acetate content reported too — most vendors hide the counterion. Clean documentation.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
Purity and identity were on point. Only nitpick is the vial is a touch small for larger diluent volumes — minor.
Purity and identity were on point. Only nitpick is the vial is a touch small for larger diluent volumes — minor.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
Ordered the 5-vial bundle — per-vial pricing is fair and the volume discount applied exactly as shown. Smooth checkout.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
Arrived with the gel pack still cold and vials undamaged. HPLC purity as stated. Handling instructions on the insert were clear about −20 °C storage.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Ran our own analytical HPLC on the lot and it agreed with the published COA within tolerance. Identity confirmed by MS. This is what a research supplier should be.
Dispatched same day, arrived sealed with legible lot numbers. The batch report was already in the vault before the package landed.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Packaging was discreet and protective, labels crisp, and the lot resolved to a real report in the COA vault. Zero complaints.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Ran our own analytical HPLC on the lot and it agreed with the published COA within tolerance. Identity confirmed by MS. This is what a research supplier should be.
We qualify every batch and PepBiotech's COAs make that painless. Lot lookup on the site is exactly what our QA needs for traceability.
Lyophilized cake dissolved fully in bacteriostatic water with no cloudiness or residue. Net peptide content on the COA let me hit exact working concentrations.
No issues with the material itself. The label print was slightly faint on one vial but still fully legible.
Ran our own analytical HPLC on the lot and it agreed with the published COA within tolerance. Identity confirmed by MS. This is what a research supplier should be.
Being able to look up the certificate by lot number before ordering is the whole reason we switched. Documentation is impeccable.
Everything checked out against the COA. Shipping took a day longer than expected but arrived well packed.
