Discounts listed above are for 5'-modifications only. Modifications at the 3' are at list price, discounts are available on quantities of more than 10 sites per order.
Biotin-TEG is a biotin attached to a 15-atom mixed polarity triethylene glycol spacer, and can be incorporated at either the 5'- or 3'-end of an oligonucleotide, or at an internal position. The spacer acts to minimize steric hindrance between the biotin moiety and the oligo, thereby providing streptavidin easy access to the biotin for capture and immobilization of the oligo. Additional technical details for biotin are presented in the Biotin technical sheet.