Thermo Scientific™ EZ-Link™ Maleimide-PEG2-Biotin

Biotinylate reduced cysteines with this short, maleimide-activated, sulfhydryl-reactive biotinylation reagent containing a 2-unit PEG spacer arm to enhance water solubility.

Brand: Thermo Scientific™

Manufacturer Part Number: 21901

50MG Maleimide-PEG-2-Biotin(Maleimide-PEO-2-Biotin)

UNSPSC: 12352200

Code: PN

Additional Details:
Additional Details: Weight: 0.03000kg

Product Code. 10519873

Quantity Price
1 £250.00 / 50mg
In Stock 1
EU Stock 6
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Description and Specification


Chemical Reactivity Sulfhydryl
Cleavable No
Description EZ-Link Maleimide-PEG2-Biotin
Formulation Maleimide-activated biotin with diethyleneglycol spacer
Molecular Weight 525.62
Membrane Permeable No
PEGylated Yes
Spacer Arm Length 29.1
Quantity 50mg
Sufficient For Approx. 25 uses to label a total of 634mg of IgG using typical conditions
Water Soluble Yes


  • Water-soluble; contains polyethylene glycol (PEG) spacer arm
  • Reacts with sulfhydryl (-SH) groups at acidic to neutral pH
  • Transfers hydrophilic PEG spacer arm to final conjugate
  • Forms a thioether bond