Here’s something to smile about: We recently updated all of our biotinylation reagent product pages to include new figures and more complete information about the chemical structure of each biotin compound.
Thermo Scientific EZ-Link Alkoxyamine-PEG Biotinylation Reagents contain four-, eight, or 12-unit polyethylene glycol (PEG) spacers for biotinylating macromolecules at carbohydrate groups that have been oxidized to form aldehydes.