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Biotinylation Reagents

Biotin-PEG-Maleimide, Biotin-PEG-MAL, MW 500

Catalog: TASK-36-1000341   CAS NO.: N/A
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Biotin-PEG-Maleimide (Biotin-PEG-MAL) refers to a compound where biotin is linked to a polyethylene glycol (PEG) spacer terminated with a maleimide functional group. Maleimide is a reactive group that specifically reacts with sulfhydryl (-SH) groups under mild conditions to form stable thioether bonds. This reaction is commonly used for site-specific labeling of proteins, peptides, or other biomolecules containing cysteine residues. Biotin is a vitamin B derivative that binds specifically and with high affinity to avidin and streptavidin, facilitating detection, purification, or immobilization of biotinylated molecules. Polyethylene glycol (PEG) is a flexible and hydrophilic linker that enhances solubility and reduces nonspecific interactions in biological environments.


Molecular Weight500
Ship Within1 week
Storage Temp.-20℃
Shipping4-25℃ for up to 3 weeks
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