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: 21901BID

UNSPSC: 12352200

Code: PN

Additional Details:
Additional Details: Weight: 2.72160kg

Product Code. 10519873

Quantity Price
1 £ 264.0 / 50mg
EU Stock 11
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Description and Specification


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