Peptides
TB-500
- Size
- 5 mg
- Form
- Lyophilized powder
- Purity
- ≥ 99% (per COA)
- COA
- Linked per batch
$70.00
Build a stack of 5+ compounds for 20% off — your protocol totals live in the bench tray, with the research-use-only acknowledgment captured at checkout.
For laboratory research use only · Not for human consumption
Reference data
TB-500 corresponds to the full sequence of thymosin beta-4, a 43-amino-acid acetylated peptide. The "TB-500" designation is commonly used for the synthetic peptide.
- Class
- Synthetic 43-residue peptide (thymosin beta-4)
- Also known as
- Thymosin beta-4 · Timbetasin · TB4 · TMSB4X
- Molecular formula
- C212H350N56O78S
- Molar mass
- 4963.49 g/mol
- CAS number
- 77591-33-4
- Appearance
- White to off-white lyophilized powder
- Storage
- Store lyophilized at -20 °C, protected from light. After reconstitution, keep refrigerated at 2–8 °C.
- Reconstitution
- Reconstitute with bacteriostatic or sterile water; concentration follows the target volume (see the reconstitution calculator).
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
Authoritative references
Reference data is provided for laboratory identification only. Values are sourced from public chemistry databases; confirm against the batch COA. Not for human or animal use.
Quality & testing
Every batch is independently third-party tested for identity, mass, and purity, and ships with a lot code you can verify. How we test →
- Purity spec
- ≥99%
- Verified by
- Chromate
- Lot
- 34323
- Status
- Independently verified
Dial it in
Reconstitution Calculator
2.50mg/mL
2,500 mcg/mL
10.0units
on a U-100 syringe
Measurement math for laboratory research only. Not dosing guidance, medical advice, or a therapeutic claim.
Product reviews
Ratings reflect product quality — purity, labeling, packaging, reconstitution, and shipping. Research use only.
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Pairs well with
Complete the stack
Compounds researchers commonly explore alongside TB-500. Build a stack of 5+ distinct compounds and 20% comes off the whole protocol (supplies excluded).
Pairings reflect compounds commonly researched together — not a protocol, combination guidance, or any therapeutic claim. Research use only.