High Purity TB500 2mg Research Peptide Lyophilized Powder CAS 885340-08-9
TDS 35 Inquiries
885340-08-9
Research Grade
99%
ShenZhen
XH
10 vials/kit, 10mg/vial or customized specification
2026-10-09
Retatrutide,Tirzepatide,Semaglutide,GHK-CU,NAD+,MOTS-C
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceTB 500 is a synthetically made version of TB4 that facilitates healing and recovery by helping build new blood vessels, muscle tissue fibers, blood cells, and facilitating cell migration. It acts on the muscular system and has anabolic properties. TB 500 is used primarily for race animals (horses and dogs).CertificatesBasic Info
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Product Name:
TB500
Other Name:TB500 fragment;L-Glutamine, N-acetyl-L-leucyl-L-lysyl-L-lysyl-L-threonyl-L-α-glutamyl-L-threonyl-;Thymosin Beta 4 Peptide Peptides Tb500 2mg/Vials 5mg/Vials;TB500 fragment acetate;TB500 Thymosin Beta 4 (TB4);Ac-LKKTETQ;Thymosin β4 TB500;TB500(Thymosin B4 AceTate) 5MG 10MG
CAS No.:885340-08-9
Molecular Formula:C38H68N10O14
InChIKeys:ADKDNDYYIZUVCZ-HLXZCORBNA-N
Molecular Weight:889.02
EC Number:232-660-2
Color/Form:White to Off-White
Categories:
Characteristics-
Density:
1.281±0.06 g/cm3(Predicted)
Boiling Point:1405.0±65.0 °C(Predicted)
PKA:3.20±0.10(Predicted)
Research-
Class:
Actin-sequestering protein / 43-amino-acid peptide
Status:Research compound — Not FDA approved (investigational: RGN-259 for dry eye / neurotrophic keratitis)
Mechanism:A naturally occurring 43-amino-acid peptide (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-OH) that binds G-actin (sequesters monomeric actin), preventing F-actin polymerization. Promotes cell migration, angiogenesis, wound healing, and anti-inflammatory responses via integrin-linked kinase (ILK) and HIF-1α/VEGF pathways. TB-500 is the synthetic fragment Ac-LKKTETQ (MW ~895) often sold under this CAS.
Activity note:Thymosin Beta-4 is an actin-binding protein, not a receptor agonist. Functional activity is measured by actin sequestration (Kd ~0.7–1 μM) and cell migration assays, not EC₅₀.
Source:Goldstein AL, et al. Vitam Horm. 2003;66:257–296. RegeneRx RGN-259 clinical program.DOI
Clinical Development:
References-
DrugBank:PubChem:UNII:Disclaimer:
Thymosin Beta-4 (TB-500) is NOT FDA-approved for human therapeutic use. RGN-259 (Tβ4 ophthalmic solution) is an investigational drug not yet approved. TB-500 sold on research-chemical marketplaces is a synthetic fragment and is not an approved medicine. This listing is for industrial and laboratory research use only. It is not medical advice, a clinical recommendation, or an approved therapy description. Always verify regulatory status, purity, and intended use with the supplier and applicable authorities before purchase or use.
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Seller Information
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Business Type:
Trader
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Main Products:
Retatrutide,Tirzepatide,Semaglutide,GHK-CU,NAD+,MOTS-C
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Location:
Block 1, No. 205, Tongbao Road, Jiangdong Street, Yiwu City, Jinhua City, Zhejiang Province (within Zhejiang Juzhiyun Holding Co., Ltd., on the 4th floor of 2 buildings)
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Payment Terms:
TT against copy of documents,O/A,100% TT in advance
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Total Employees:
101-200
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Year of Establishment:
2026
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Inquiry History35 Inquiries
Country Product Purchase Quantity Date Posted 
United States
Factory price CAS 885340-08-9 L-Glutamine TB500
1 KG Sep 26, 2023
United States
TB500 99% White powder Beta-4 CAS 885340-08-9 powder Custom peptides
1000 Oct 30, 2023
United States
TB 500
150 MG Apr 8, 2026
United States
China Origin TB500 2mg/5mg/10mg Lyophilized Powder for the Wound Repair Research
1 G Mar 26, 2026
United States
TB500
100 MG Feb 27, 2026 
Germany
TB 500
1 KG Feb 8, 2026 
Portugal
Tb 500
10 MT Aug 7, 2024 
France
TB500
1 KG Mar 27, 2024
United States
TB500
1 G Jan 27, 2024 
United Kingdom
TB500(Thymosin B4 Acetate)
30 G Apr 22, 2026 
Sweden
Retatrutide, MOTS-C, Semax, KLOW
1 MT Apr 13, 2026
United States
TB-500
1 KG Mar 20, 2026
United States
TB 500 5mg
50 MT Mar 5, 2026
Germany
TB 500
500 MG Jan 28, 2026
United States
TB-500
100 PCS Dec 11, 2025
United States
TB 500
20 PCS Nov 19, 2025 
Switzerland
Thymosin Beta-4 TB-500 10mg
10 20' Fcl Mar 7, 2025
United States
TB500
10 MG Aug 16, 2024 
India
TB500
50 MG May 9, 2024
United States
High Purity 99% Tb-500 5mg TB 500 Peptide TB500
30 MT Nov 6, 2023 Post an enquiry for this product
Research Peptide / Pharmaceutical Intermediate 
