I. [Product Description] 
Tosyl-PEG-Niacin is a multifunctional organic intermediate that combines the high reactivity of the tosyl group, the hydrophilicity of polyethylene glycol (PEG), and the structural characteristics of nicotinic acid. It is widely used in the fields of pharmaceutical intermediate synthesis and polymer material modification. The molecular weight of its PEG chain can be adjusted to optimize solubility and biocompatibility, and the tosyl group can act as an efficient catalyst or linking group in coupling reactions.

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 freezing and thawing. 
【Solvent】 Conventional organic solvents such as chloroform, dichloromethane, and DMSO. 
【Molecular Weight】 (PEG): 2000, 3400, 5000. Other molecular weights can be customized. 
【Storage Conditions】 Store at a low temperature below 4°C in a sealed and dry environment. 
▪ Notes: ▶ To ensure product stability, please open the package for use only after constant temperature drying! 

III. [Application Fields] 
1. Cross-linking agent for surface functional modification of polymer materials 
2. Targeting ligand connection module for the construction of nano drug carriers 
3. Linker arm for controllable release systems in bioconjugation reactions 
4. Intermediate for click chemistry reactions 
5. PEGylation modification of proteins/polypeptides to enhance stability 

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

Chongqing Yusi Pharmaceutical Technology Co., Ltd. operates 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 

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