1,1,1-Trifluoroethyl-PEG5-Tos contains a trifluoroethyl and tosylgroup. The tosyl group can be easily replaced by thiol and amino group through a nucleophilic substitution.The hydrophilic PEG linker increase the solubility of the compound in aqueous media.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.