Ɑ-Biotinamido-ω-Trimethoxysilylpropylurea PEG

A heterobifunctional PEG derivative for surface chemistry. In typical protocols the PEG spacer is first attached to a surface (e.g. glass) via the silyl group. Subsequently the biotinyl functionality is used to attach avidin or streptavidin containing substrates. Pegylation by binding of biotinyl PEG to avidin and streptavidin is very specific and fast.