I. [Product Description] 
OPSS-PEG-SA (O-pyridyl disulfide/pyridylthiol-polyethylene glycol-stearic acid) is a bifunctional cross-linker, which combines the hydrophilicity of the PEG segment and the hydrophobicity of stearic acid. It can be used as an organic intermediate and a pharmaceutical intermediate, and is widely used in the preparation of nanocarriers and the construction of targeted delivery systems. Its O-pyridyl disulfide group can achieve dynamic covalent bond binding and controllably release active groups under the action of a catalyst or in a reducing environment.

II. [Product Details] 
    【Appearance】 Depending on different molecular weights, it appears as a white/off-white solid or a viscous liquid. 
    【Stability】 Store refrigerated 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 in a sealed, dry container at a low temperature below 4°C. 
    ▪ Notes: ▶ To ensure product stability, please open the package for use only after constant-temperature drying! 

III. [Application Fields] 
    1. Hydrophobic-hydrophilic interface modification of liposome/micelle nanoparticles 
    2. Controllable coupling of ligands and carriers in targeted delivery systems 
    3. Oriented connection in protein/antibody bioconjugation reactions 
    4. Surface functional modification of biosensors 
    5. Introduction and modification of functional groups in polymer materials

Remarks: 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 under an integrated business model of independent R & D, production, and sales. It provides professional scientific research reagents for scientific experiments in universities. 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 need other products, please contact us: 
Contact Information: 
Landline: 023-62795528 
Customer Service Hotline: 19112925095 丨 QQ: 3012135199
                                           18896157519 丨 QQ: 3354316092

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