|Dimensions||.75 × .75 × 2 in|
$250.00 – $1,400.00
Biotin-dPEG®24-TFP ester, product number 10007, is the 2,3,5,6-tetrafluorophenyl (TFP) ester analog of PN10774, NHS-dPEG®24-biotin. PN10007 is part of a family of dPEG®-biotin reagents that provide different lengths of dPEG® between the biotin moiety and the reactive end group. The active esters can be either N-hydroxysuccinimide (NHS) or 2,3,5,6-tetrafluorophenol (TFP). Compared to NHS esters, TFP esters are more reactive towards primary amines and more stable in water or aqueous buffer. The optimum pH for reaction with TFP esters is in the range of 7.5 – 8.5, and for NHS esters the optimum reaction pH range is 6.0 – 7.5. To learn about the advantages of TFP esters over NHS esters, please click here now.