I. [Product Description]
Tosyl-PEG-COOH is a multifunctional organic intermediate that combines the high reactivity of the tosyl group with the excellent water solubility and biocompatibility of polyethylene glycol (PEG). It is widely used in the fields of polymer material synthesis, bioconjugation, and catalyst carriers. The carboxyl end can be further derivatized, providing a flexible modification platform for the construction of pharmaceutical intermediates and functionalized materials.

II. [Product Details]
    【Appearance】 Depending on the molecular weight, it appears as a white/off-white solid or a viscous liquid.
    【Stability】 Store under refrigeration and avoid repeated freeze-thaw cycles.
    【Solvent】 Common organic solvents such as chloroform, dichloromethane, and DMSO.
    【Molecular Weight】 (PEG): 2000, 3400, 5000. Other molecular weights can be customized.
    【Storage Conditions】 Store in a sealed and dry condition at a low temperature below 4°C.
▪ Precautions: ▶ To ensure product stability, please open the package for use only after constant-temperature drying!

III. [Application Fields]
    1. Precise introduction of functionalized PEG segments into polymer materials.
    2. Modification of carboxyl functional groups on the surface of nanoparticles.
    3. Site-specific conjugation reactions of proteins/peptides.
    4. Immobilization of transition metal catalysts in organic synthesis.
    5. Preparation of hydrophilic coatings for microfluidic chips.

Note: The products sold by our company are only used for scientific research and cannot be used for human experiments or human treatment.

Chongqing Yusi Pharmaceutical Technology Co., Ltd. is based on an integrated business model of independent R & D-production-sales, providing professional scientific research reagents for university scientific research experiments. Compared with similar products on the market, our company's products have obvious price advantages. In addition, we also provide professional product customization services.

If you have other product needs, please contact us:
Contact Information:
Landline: 023-62795528
Customer Service Hotline: 19112925095 丨 QQ: 3012135199
                                           18896157519 丨 QQ: 3354316092

Similar Product Recommendations:
1. MAL-PEG-NHS
2. NH2-PEG-COOH
3. SH-PEG-SH
4. Biotin-PEG-NHS
5. FITC-PEG-MAL
6. Acrylate-PEG-COOH
7. DSPE-PEG2000
8. PLGA-PEG-COOH
9. mPEG-Silane
10. DBCO-PEG-NHS
11. Cholesterol-PEG-MAL
12. Azide-PEG-Amine
13. OPSS-PEG-COOH
14. HO-PEG-OH
15. FA-PEG-NHS