Thermo Scientific™ EZ-Link™ NHS-PEG4-Biotin and Labeling Kits

Biotinylate protein amines and maximize solubility of proteins with this long (29.0A) NHS-ester biotinylation reagent containing a pegylated, water-soluble spacer arm.

Brand: Thermo Scientific™

Manufacturer Part Number: 21329

UNSPSC: 41115824

Code: A0

Additional Details:
Additional Details: Weight: 2.72160kg

Product Code. 11891195

Quantity Price
1 £ 195.0 / Pack of 8
EU Stock 43
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Description and Specification


Storage Requirements Store in original bottle at 4°C with desiccant
Formulation NHS ester of biotin with a tetraethyleneglycol spacer
Cleavable No
Sufficient For 8 uses to label a total of 181mg of IgG using typical conditions
Molecular Weight 588.67
Spacer Arm Length 29
Description EZ-Link NHS-PEG4-Biotin, No-Weigh Format
Membrane Permeable No
PEGylated Yes
Chemical Reactivity Amine
Quantity 8 x 2mg
Water Soluble Yes


  • Water-soluble polyethylene glycol (PEG) spacer arm increases solubility of labeled protein
  • Prevents aggregation of antibodies better than Sulfo-NHS-LC-Biotin
  • Labels at N-terminus or lysine residues in less than 1 hour
  • Thermo Scientific No-Weigh Packaging (8 x 2mg) saves time - preserves reagent activity and prevents cross-contamination between use