t-Boc-N-amido-PEG-OH (tBoc-NH-PEG-OH), MW 10K is a heterofunctional PEG molecule containing an amino protecting group. It is a useful crosslinker with a PEG spacer. Protected amines can be regenerated under mildly acidic conditions.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.