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SKU: 786-698-XX Category:
Special Requirements?


HOOK™ Sulfo-NHS-Biotin reacts with protein primary amines.  Amines, lysine ε-amines and N-terminal α-amines, are the most abundant group in protein molecules and represent the most common target for biotinylation. For example, BSA contains 59 primary amines, of which up to 35 are available on the surface of the molecules and can be reacted with amine reactive esters.
HOOK™ Sulfo-NHS-Biotin is available as a 50mg aliquot or in our single-use OneQuant™ format (8 x 1mg).
For our complete HOOK™ Sulfo-NHS-Biotin Labeling Kit, click here.

For our micro sized kit, click here. 



  • Molecular Weight: 443.43
  • Spacer Arm (Å): 13.5
  • Reactive Group: sulfo-NHS-ester
  • Membrane Permeable: No
  • Water Soluble: Yes
  • Cleavable/ Reversible: No
  • Reaction pH: 7-9



  • For the coupling of biotin to protein amine groups
  • For the labeling of proteins with Sulfo-NHS-Biotin



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