DBCO-PEG-Silane, MW 1,000 is a linear heterobifunctional PEG reagent with a DBCO and a silane. DBCO (dibenzocycolctyne) PEG Silane derivatives can go Click Chemistry reaction without a need of any metal catalysts. The strain-promoted 1,3-dipolar cycloaddition of cyclooctynes and azides, also termed as the Cu-free click reaction, is a bioorthogonal reaction that enables the conjugation of two molecules in aqueous solution. It is a useful crosslinking or bioconjugation reagent with a PEG spacer. More detail: https://axispharm.com/product/dbco-peg-silane-mw1k/