RESEARCH USE ONLY: All products are intended for research use only as defined by the FDA. Not for use in diagnostic procedures, human use, or veterinary use.

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TB-500 (Thymosin Beta 4 Fragment)

Manufactured and tested in the USA

Made in U.S. facilities and third-party tested every batch. It costs a little more, and it's worth it.

Third-party tested in the USA

Every batch is tested by a U.S.-based third-party laboratory.

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TB-500 is a synthetic seven residue peptide (Ac-LKKTETQ) matching the actin binding region, residues 17 to 23, of thymosin beta-4 (Tβ4). It is a fragment, not the full length 43 residue Tβ4 protein. Molecular formula C₃₈H₆₈N₁₀O₁₄, molecular weight 889.0 g/mol (PubChem CID 62707662). Supplied as a lyophilized powder in 2mg and 5mg vials with ≥98% purity (HPLC verified). For in-vitro research use only.

Products are of the utmost purity and concentration… Shipping is VERY fast. Customer service is professional and very responsive.

★★★★★

— Eli

Additional information

Weight	0.008125 lbs
Size	2mg, 5mg

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⚠️ Disclaimer: THIS PRODUCT, SOLD BY LOTI LABS, IS INTENDED AS A RESEARCH CHEMICAL ONLY.
This designation allows the use of this chemical strictly for in-vitro laboratory testing and experimentation. No other uses or purposes are permitted. All information provided on this website is for educational purposes and has been compiled from multiple sources believed to be accurate. Human or animal use of this product is strictly forbidden by law. This product is not a drug, food or cosmetic and may not be misbranded, mislabeled or misused as such. Anyone not adhering to these terms will be blacklisted and forbidden from purchasing.

Product Description

Buy TB 500 at Loti Labs: Research Peptide for Scientific Applications

Molecular Structure of TB 500

TB 500 is a synthetic seven amino acid peptide, Ac-LKKTETQ, that matches the actin binding region (residues 17 to 23) of thymosin beta-4. It is a fragment, not the full 43 amino acid thymosin beta-4 protein.

Key Molecular Specifications:

Amino Sequence: Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (7 amino acids, N-terminal acetyl)
Molecular Formula: C38H68N10O14
Molecular Weight: 889.0 g/mol
PubChem CID: 62707662

Why Buy from Loti Labs

Loti Labs offers research grade TB 500 vials for scientific use. The company’s commitment to quality ensures researchers get consistent, high purity compounds for rigorous experimental protocols. Each purchase includes documentation to support research compliance and experimental validity.

Product Features:

Research grade purity > 98%
Competitive pricing $45-68 per vial
HPLC testing certificates
Chemical Safety Data Sheets
Vacuum sealed vials for optimal stability
Long shelf life for long term storage

The company’s quality control process ensures each batch meets research standard, providing scientists with reliable material to study TB 500 on other experimental applications. This consistency is important for researchers who need reproducible results across multiple experimental sessions.

Compliance and Research Use Guidelines

All products from Loti Labs are for research use only and comply with research chemicals regulations. This designation allows use only for in-vitro laboratory testing and experimentation within controlled research environment. The company states that TB 500 is not a substance for human or veterinary use and must not be misbranded or misused outside of research context.

Research Use:

For laboratory research only
Not for human or veterinary use
Follow institutional research protocols
Maintain proper documentation and handling procedures

Shipping and Customer Support

Loti Labs has efficient shipping protocol to support researchers’ project timeline. Orders placed before 1pm EST Monday to Friday ship same day, orders placed after 1pm EST or weekend ship next business day. This allows researchers to plan their experimental timeline.

The company offers 30 day satisfaction guarantee on unopened products, researchers can return unused items for full refund. This policy allows risk free purchasing for research labs managing budget and project requirements.

Third Party Testing and Quality Assurance

Every batch of TB 500 is tested by third party using HPLC analysis, the gold standard for peptide purity verification. This testing ensures each vial has > 98% purity and correct molecular structure so researchers can trust their experimental materials.

Quality control includes:

Independent lab testing
Batch specific certificates of analysis
Molecular structure verification
Purity testing > 98%
Consistency across batches

These quality assurance protocols allow researchers to trust their results and have consistency across studies involving TB 500. The third party verification adds an extra layer of credibility to research and support publication requirements for peer reviewed journals.

For background on thymosin beta-4, the parent protein of the TB-500 fragment, please visit Wikipedia.

Weight	0.0099 lbs
Appearance	Lyophilized Powder
Peptide Sequence	Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln
Solubility	100 µg/mL sterile diluent
Source	Biosynthetic production
Molar Mass	889.0 g/mol
Options container	container2
CAS Number	N/A
PubChem	CID 62707662
Molecular Formula	C38H68N10O14
MG	2mg and 5mg
Terms	This product is sold for research/laboratory usage only. No other uses are permited.

About Loti Labs

Your Trusted Partner in Research Excellence

Every batch tested. No fillers. No guesswork. At Loti Labs, we’re more than just a supplier — we’re your partner in achieving breakthrough results. With 14+ years of proven expertise, we deliver a boutique experience built on premium quality, fast fulfillment, and client-first service.