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Frag 17-23 Export Standard Synthetic Biochemical Polypeptide Raw Material Complete COA MSDS Customs Documents Low Moisture White Crystalline Powder Mu buy - large image1

Frag 17-23 Export Standard Synthetic Biochemical Polypeptide Raw Material Complete COA MSDS Customs Documents Low Moisture White Crystalline Powder Mu

TDS 12 Inquiries

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CAS No.:

885340-08-9

Grade:

Research Grade

Content:

99%

Port:

Guangdong

Brand:

OEM

Packaging:

10mg/vial

Price valid (until):

2026-07-16

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HONG KONG BURSON POLYPEPTIDE R&D LIMITED

Company Type:

Trader

Location:

Hongkong, China

Qualification:

Main Products:

Tirzepatide,Retatrutide,Semaglutide,GHK-Cu

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Product Description
Seller Information
Inquiry History

Description

Our Advantage

1. Rich experience.
Our company is a professional production leading factory in China in pharmaceutical area of many years, our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other country, and we have got very good feedback from our customers, we had Established long friendly relations of cooperation.

2. Great quality, purity and favourable.
Good quality is one of our secret success, welcome order the samples, MOQ just 5 grams.

3. Safe and fast delivery.
We have stock, so we can delivery quickly at the very day when receive the payment.

We have special way could ship 0.01kg to 3.5kg products a time. We offer melting powder into liquid service. And ship the liquid in special bottles.

4. Good after-sales service.

Tell me the package update, and will try best solve when customer encountered various problems.

Items	Specifications
Product Name	Frag 17-23
Appearance	White crystalline powder
Purity	≥98% Detected by HPLC
Storage Condition	2-8℃ sealed container, avoid direct sunlight and high temperature
Shelf Life	2 years under standard storage environment

FAQ

Q1:Can i get free sample ?
A: Yes, most product we can send you small free sample, you just need to pay the shipping cost .

Q2: Can i get tracking number after shipment ? and how long does the shipping take?
A: After shipment we will offer you tracking and tell you the website to track the package, usually the shipping time is 3-7days,but for some customers have no ability to declare customs, we use special line route to ship the package, it will take 10-12days to arrive,make sure 100% delivery

Q3: How can you guarantee the quality ?
A: All products we can supply you test report &you can also send our product to the third party to do test, if it is fake,we will full refund you.

Shop Frag 17-23 Ultra High Purified Synthetic Biochemical Reagent Polypeptide Dry Powder Strict Residual Impurity Control Stable Batch Consistency Professi-Detailed Image 1

Our service

1.We supply Peptides, APIs & Intermediates and so on to satisfy your needs;
2. We will reply you for your inquiry in 24 hours;
3. Strictly on selecting raw materials . Our Q&C team will inspect every product quality strictly before delivery

4. Reasonable & competitive price, fast lead time ; Shop Frag 17-23 Ultra High Purified Synthetic Biochemical Reagent Polypeptide Dry Powder Strict Residual Impurity Control Stable Batch Consistency Professi-Detailed Image 13

5. After delivery, we will track the products for you once every two days, until you get the products. When you got the goods, if you have any questions about the problem, contact with us, we will offer the solve way for you ;

6. 100% safe delivery, guaranteed delivery .

FAQ

Q:Can i get free sample ? A: Yes, most product we can send you small free sample, you just need to pay the shipping cost .

Q:Which payment method you accept? A: We accept bank transfer,T/T,PayPal,Credit card etc. and more bigger order we accept L/C at sight

Q: Can i get tracking number after shipment ? and how long does the shipping take? A: After shipment we will offer you tracking no and tell you the website to track the package, usually the shipping time is 3-7days,but for some customers have no ability to declare customs, we use special line route to ship the package, it will take 10-12days to arrive,make sure 100% delivery

Q: How can you guarantee the quality ? A: All products we can supply you test report &you can also send our product to the third party to do test, if it is fake,we will full refund you.

Q: How to store it? A: If it hasn't been opened, just put it in cool dry place, if it is opened, you may put it in cold storage for 2-5 degree condition.

Q: How to order this product? A: You can click "contact Supplier" , or write an email to my inbox, and send us a inquiry, leave your number if possible, we will contact with you as soon as possible, then we can talk order details.

Q: How about the delivery time? A: Shipped within 48 hours after payment is received.Small orders are shipped via express door-to-door.The goods arrive in about7-10 days.

Q：ls cash on delivery ? A:in most cases,we don't support cash on delivery.

Q: How much is the commodity? A: As we all know, the price of chemicals is not fixed, but fluctuates with the market. You need to contact me to get the latest product price, we promise to give you the most favorable price.

Q:About the after-sale service? A:After purchasing the products from our Company, we have a professional technical team and after-sales team to serve you and solve all your problems in the future.

Company infor

Hong Kong Bosen Peptide R&D Co., Limited in 2024 with strong research and development capabilities and superb synthesis technology, as well as advanced quality control measures. Effectively promote the joint venture and cooperation with the major enterprises, manufacturers, with the idea of industrial development to serve the society and the majority of users. We always adhere to the market demand as the orientation, constantly synthesizing new high-tech chemical products and medical intermediates, mainly exported to the United States, Europe, India, South Africa, Nigeria and other countries and regions, has a wealth of export experience, to ensure transportation safety, can let each customer as soon as possible to safely receive the goods.

ECHEMI Editorial Reference

TB 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).

Certificates

Basic Info

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:

Polypeptide

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:

NCT02974907; NCT02600429; NCT00376974

References

DrugBank:

DB04951

PubChem:

PubChem

UNII:

549LM7U24W

Literature:

PubMed: Goldstein AL et al. (2003) — Review; ClinicalTrials.gov: ARISE-1 (NCT02974907)

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.

Seller Information

Business Type:
Trader

Main Products:
Tirzepatide,Retatrutide,Semaglutide,GHK-Cu

Location:
RM 701, UNIT 108, 7/F, TWR B NEW MANDARIN PLAZA 14 SCIENCE MUSEUM RD TSIM SHA TSUI HONG KONG

Year of Establishment:
2026

Inquiry History

12 Inquiries

Country	Product	Purchase Quantity	Date Posted
United States	TB 500	150 MG	Apr 8, 2026
Germany	TB 500	1 KG	Feb 8, 2026
Italy	TB500	1000 mg	Dec 30, 2024
Netherlands	tb500	1	Dec 16, 2024
New Zealand	TB500	100 mg	Jun 24, 2024
Germany	High Purity 99% Tb-500 5mg TB 500 Peptide TB500	1 MT	Oct 19, 2023
United Kingdom	TB500(Thymosin B4 Acetate)	30 G	Apr 22, 2026
United States	TB500	10 mg	Aug 16, 2024
India	TB500	50 mg	May 9, 2024
Poland	TB500 \| Thymosin β 4 \| CAS 885340-08-9 \| TB 500	1 G	Jul 26, 2025
United States	IGF-1 LR3 TB500 Thymosin Alpha-1	10 20' Fcl	Feb 16, 2026
Poland	Hot Selling N-Acetyl Semax 99% Petide powder NA-semax CAS 80714-61-0 Semax	300 MG	Apr 29, 2026

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Frag 17-23 Export Standard Synthetic Biochemical Polypeptide Raw Material Complete COA MSDS Customs Documents Low Moisture White Crystalline Powder Mu

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