TB-500 (Thymosin Beta-4, 43 aa) 10 mg
Full-length 43-residue thymosin beta-4 reference peptide, 10 mg lyophilized at 98.8% HPLC purity.
- Purity (HPLC)
- 98.8%
- Fill weight
- 10 mg / vial
- CAS number
- Stated on batch CoA
- Form
- Lyophilized powder
- Assay
- RP-HPLC + mass spectrometry
- Storage
- −20 °C, protected from light
About TB-500 43 aa as a reference compound
The complete 43-amino-acid thymosin beta-4 sequence, supplied for laboratories that require the full-length protein rather than a fragment. Every PureLabs lot of TB-500 43 aa is produced under GMP-aligned synthesis controls, assayed by an independent partner laboratory using reverse-phase HPLC with mass-spectrometric confirmation, and released only above the stated purity threshold of 98.8%. The certificate of analysis is lot-specific, carries the chromatogram and MS trace for the exact vial you receive, and stays archived under reference SEQ-1092 for as long as the batch exists.
Handling and storage
- Store sealed TB-500 43 aa vials at −20 °C, protected from light.
- Reconstitute with bacteriostatic or sterile water added slowly down the vial wall; swirl, never shake.
- Hold reconstituted solution at 2–8 °C and use within roughly 21 days.
- Aliquot before freezing to avoid repeated freeze–thaw cycles.
TB-500 43 aa — frequently asked questions
Common laboratory questions about sourcing, purity, storage and shipping of TB-500 43 aa.
What purity is PureLabs TB-500 43 aa?
Current stock assays at 98.8% by reverse-phase HPLC, confirmed by mass spectrometry at an independent laboratory. Any lot testing below the threshold is rejected rather than sold.
Does TB-500 43 aa ship with a certificate of analysis?
Yes. A lot-specific certificate of analysis including the HPLC chromatogram and MS trace accompanies every TB-500 43 aa order and remains retrievable under batch reference SEQ-1092.
How should TB-500 43 aa be stored?
Sealed lyophilized TB-500 43 aa is stable at −20 °C for at least 24 months; once reconstituted, hold at 2–8 °C and use within about three weeks.
How fast does TB-500 43 aa ship?
Orders confirmed before 15:00 UTC dispatch the same working day in insulated, tracked cold-chain packaging, subject to the import rules of the destination country.
Is TB-500 43 aa sold for human use?
No. PureLabs supplies this compound strictly as reference material for in-vitro and laboratory research. It is not a medicine and is not for human or veterinary consumption.