For laboratory research use only - not for human consumption
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Research guide

Ac-LKKTETQ / thymosin beta-4 fragment

TB-500 research guide

A plain guide to TB-500 identity, thymosin beta-4 background, and why the direct TB-500 record stays narrow.

Compound: TB-500Catalogue code: TB-500Stocked size: 10 mgScope: Lab research guideProduct record: TB-500Catalogue: All first-stock records

01 - Short version

The quick read.

Plain-language context only. No preparation steps, no use instructions, and no product-effect claims.

New to TB-500? Here's the short version. TB-500 is usually described as a synthetic fragment linked to thymosin beta-4.

TB-500 is framed here as the N-acetylated 17-23 fragment, Ac-LKKTETQ.

Direct TB-500 papers focus on synthetic fragment characterisation and LC-MS detection. Thymosin beta-4 papers provide parent-sequence background.

02 - What it is

The plain identity details.

Compound
TB-500
Parent context
Thymosin beta-4 fragment
Analytical identity
N-acetylated LKKTETQ
Sequence
Ac-LKKTETQ
CAS
COA check required
Format
Lyophilized research reference
Storage
Cold, dry, protected from light
Lot
TB5-2506

Identity information lets you compare the guide with the product label. It is not a certificate, mixing method, or instruction for use.

03 - What studies look at

The main research themes.

Each note stays at study-context level and avoids use instructions.

01Parent sequence paperLow et al., PNAS, 1981.

This anchors the parent peptide, not direct TB-500 evidence.

02Fragment characterisationEsposito et al., Drug Test Anal, 2012.

This is one of the direct identity anchors for TB-500.

03LC-MS detectionHo et al., J Chromatogr A, 2012.

The paper is used for analytical identity only and does not create animal-use guidance.

Handling and storage

Storage, appearance, purity, and release state come from the matching lot record.

Use the product label and matching COA as the authority for storage, appearance, purity, and release state.

This guide is educational context only. It does not include preparation, administration, human-use, or veterinary-use directions.

For laboratory research use only. 18+ only. Not for human consumption or veterinary use.

05 - FAQ

Common questions.

What is TB-500 supplied for?

TB-500 is supplied as laboratory research material only. It is 18+ only, not for human consumption, and not for veterinary use.

Does this page include matching COA information?

Yes. The product page lists lot, identity, purity, appearance, release status, and storage notes for TB-500.

How should the vial be handled after delivery?

Follow the label and matching COA paperwork. This page repeats Cold storage guidance and light-protection notes before checkout.

What is TB-500?

TB-500 is presented here as a lab-made Ac-LKKTETQ peptide linked to thymosin beta-4 fragment research.

Is TB-500 the same as full-length thymosin beta-4?

No. This page keeps full-length thymosin beta-4 as background and describes TB-500 as the shorter Ac-LKKTETQ fragment named in direct analytical papers.

Why is there no CAS number in the main spec?

The current source material supports sequence identity more clearly than one standardized CAS entry, so the final check belongs with the matching COA.

06 - References

A few key references.

Check publisher identifiers against the source before formal citation.

Actin site map

Van Troys M et al. EMBO J. 1996;15(2):201-210.

10.1002/j.1460-2075.1996.tb00350.x
TB-500 identity

Esposito S et al. Drug Test Anal. 2012;4(9):733-738.

10.1002/dta.1402
TB-500 LC-MS detection

Ho ENM et al. J Chromatogr A. 2012;1265:57-69.

10.1016/j.chroma.2012.09.043

Citations compiled 2026-07 from publisher records. This bibliography is not lab-use guidance.

(c) 2026 Form Laboratories. For research purposes only - not for human consumption. This guide is an educational summary of third-party published literature.form your biology.
2026 Form Laboratories - Research use onlyAustralia - lot-matched paperwork