Mal-PEG4-Lys(t-Boc)-NH-m-PEG24 is a PEG linker containing a maleimide end group and a t-Boc protected lysine. The maleimide can react with thiol groups between a pH range of 6.5 to 7.5.
AxisPharm offers 4000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.