I. [Product Description] 
Tosylate-PEG-Dansyl is a triblock copolymer that combines the high reactivity of tosylate and the fluorescent properties of dansyl chloride. It is suitable for the synthesis of organic intermediates and functional modification. Its core value lies in enhancing water solubility and biocompatibility through the PEG segment while providing controllable molecular weight options, and it is widely used in the construction of catalytic systems and the development of biomaterials.

II. [Product Details] 
【Appearance】Depending on the molecular weight, it appears as a white/off-white solid or a viscous liquid. 
【Stability】Store refrigerated and avoid repeated freeze-thaw cycles. 
【Solvents】Common 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. 
▪ Precautions: ▶To ensure product stability, please note that the package should only be opened after constant temperature drying! 

III. [Application Fields] 
1. Synthesis of fluorescent labeling probes (based on the fluorescent properties of dansyl chloride) 
2. Covalent modification of functional polymer materials (activation sites of tosylate) 
3. Hydrophilic surface engineering of nanocarriers (regulation of the PEG segment) 
4. Design of recyclable ligands in catalytic reactions (phase transfer properties of PEG) 
5. Construction of biosensor interfaces (dual-functionalization of fluorescence and hydrophilicity) 

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

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. 

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Contact Information: 
Landline: 023-62795528 
Customer Service Hotline: 19112925095 丨 QQ: 3012135199
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