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

Biotinylate protein amines (e.g., lysines) with our shortest (13.5A), water-soluble, NHS-ester biotinylation reagent for antibody or cell-surface labeling.

Brand: Thermo Scientific™

Manufacturer Part Number: 21925


UNSPSC: 41115824

Code: PN

Additional Details:
Additional Details: Weight: 0.10000kg

Product Code. 10687714

Quantity Price
1 £243.00 / 1 set
EU Stock 9
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Description and Specification


Chemical Reactivity Amine
Cleavable No
Description EZ-Link Micro Sulfo-NHS-Biotinylation Kit
Formulation Multi-component kit with Sulfo-NHS-Biotin
Kit Contents EZ-Link Sulfo-NHS-Biotin, 8 x 1mg
Molecular Weight 443.43
Membrane Permeable No
PEGylated No
Spacer Arm Length 13.5
Quantity 8 rxn kit
Sufficient For 8 labeling reactions, each with 0.05-0.2mg of antibody
Storage Requirements -20°C with desiccant
Water Soluble Yes


  • Shorter spacer arm than Sulfo-NHS-LC-Biotin
  • Reacts with primary amines at pH 7-9 in non-amine-containing buffers such as borate, carbonate, or phosphate buffers
  • Negative charge of -SO3 keeps biotinylation localized at the cell surface so reagent does not pass through cell membrane
  • Water solubility eliminates the need for harmful organic solvents
U.S. Patents 5,892,628 and 5,872,261.


Technical documents