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: 21330

UNSPSC: 41115824

Code: PN

Additional Details:
Additional Details: CAS Number: 2374-03-0 Weight: 0.03000kg

Product Code. 10026573

Quantity Price
1 £ 181.0 / 25mg
EU Stock 8
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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
Molecular Weight 588.67
Sufficient For Approx. 12 uses to label a total of 283mg of IgG using typical conditions
Spacer Arm Length 29
Membrane Permeable No
Description EZ-Link NHS-PEG4-Biotin
Chemical Reactivity Amine
PEGylated Yes
Quantity 25mg
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