NHS-chromogenic-PEG3-biotin

Figure 18.15 NHS-chromogenic-PEG3-biotin contains an amine-reactive NHS ester that can be used to label biomolecules through an amide linkage. The chromogenic bis-aryl hydrazone group within the spacer arm of the reagent allows the degree of biotinylation to be quantified by measuring its absorbance at 354 nm. The compound also contains a hydrophilic PEG spacer, which provides greater water solubility.

Figure 18.16 NHS-chromogenic-PEG3-biotin reacts with amine groups in proteins or other molecules to form amide bond derivatives.

NHS ester Chromogenic Hydrophilic PEG3 Biotin group... 

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