t-Boc-Aminooxy-PEG8-Ms is a crosslinker containing a Boc-aminooxy group and a mesyl group. The protected aminooxy can be deprotected under mild acidic conditions to form free aminooxy. The aminooxy has been used to conjugate with carbonyl bearing (ketone and aldehyde) biomolecules to form oxime for reversible linkage spacer.Oxime ligation is one of the hot topics in the field of bioconjugation of molecules due to its chemoselectivity and hydrolytic stability. The mesyl group is good leaving group and can also be used as protecting groups for primary alcohols.
AxisPharm offers 4000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.