Vinylsulfone PEG

Vinyl sulfone PEG is a versatile and powerful tool in biotechnology and drug delivery. Their ability to covalently attach PEG to biomolecules and drugs offers numerous advantages, including improved stability, solubility, and reduced immunogenicity. Applications of vinyl sulfone PEG range from bioconjugation of proteins and peptides to drug delivery systems and diagnostic assays. Its application in tissue engineering and regenerative medicine further highlights its importance in the field of biotechnology. As research and development in these areas continues to advance, vinyl sulfone PEG is likely to play an increasingly important role in the development of innovative therapeutic strategies and biomedical technologies.

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What is Vinylsulfone PEG?

Vinyl sulfone PEG is a derivative of PEG containing reactive vinyl sulfone groups. This group enables PEG to be covalently attached to a variety of molecules, such as proteins, peptides, antibodies, and small molecules. The vinyl sulfone group reacts with a nucleophilic group such as a primary amine (-NH2) to form a stable covalent bond. This unique reactivity makes vinyl sulfone PEG a valuable tool in bioconjugation and drug delivery applications.

Applications of Vinylsulfone PEG


Bioconjugation, or the alteration of biomolecules with PEG, is one of the principal uses of vinyl sulfone PEG. Improved stability, higher solubility, decreased immunogenicity, and a longer in vivo circulation duration are just a few benefits of this alteration. By interactions between vinyl sulfone groups and amino groups found in biomolecules, vinyl sulfone PEG can be conjugated to proteins and peptides. The biomolecules' biological activity can still be maintained when this binding is accomplished under benign circumstances. The resultant PEGylated biomolecules have improved stability, resistance to proteolytic degradation, and decreased immunogenicity, making them appropriate for a range of therapeutic uses.

Drug Delivery

Vinyl sulfone PEG has significant uses in medicine delivery systems as well. By combining PEG with drugs or drug carriers, its pharmacokinetic characteristics, therapeutic effects and side effects can be improved. Small molecule medications that have been PEGylated using vinyl sulfone PEG have improved solubility, stability, and bioavailability. PEG's covalent connection delays the renal system's fast clearance, extending circulation duration and enhancing therapeutic effectiveness. PEGylation can also lessen the immunogenicity and toxicity of several medications, making them safer for patients to take.


In the field of nanomedicine, vinyl sulfone PEG is used to modify drug carriers such as liposomes, nanoparticles and micelles. The attachment of PEG to these carriers increases their stability, prolongs their circulation time, and reduces nonspecific interactions with biological components. This enhanced stability and prolonged circulation allows for controlled and targeted drug release, improving therapeutic efficacy while minimizing side effects.

Other Applications

In addition to bioconjugation and drug delivery, vinylsulfone PEG has found utility in a variety of other applications. It is widely used in the development of diagnostic assays for immobilizing proteins or antibodies to solid supports. This immobilization makes it possible to capture and identify certain analytes, enabling sensitive and precise diagnosis. Moreover, tissue engineering and regenerative medicine have also employed vinylsulfone PEG. It is feasible to increase biomaterials' biocompatibility, lessen inflammation, and promote cell adhesion by mixing them with PEG. Because of this alteration, vinyl sulfone PEG is an effective tool for tissue engineering applications since it makes it possible to create scaffolds and matrices that facilitate cell development and tissue regeneration.

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BOC Sciences supplies a unique variety of PEG derivatives and functional PEG polymers. Our products offer the most diverse collection of reactivity, ready-to-use functionality, and molecular weight options that you will not find anywhere else.

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PEGylation of Peptides and Proteins

PEGylation of Peptides
and Proteins

Reduce the Immunogenicity of Peptide/Protein Drugs

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PEG linkers For Drug

Improved Circulation Half-Life

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