Biotin-PEG4-S-S-acid can efficiently introduce biotin moieties into amine-containing biomolecules. It is a cleavable reagent and the disulfide bond in this linker can be cleaved using reducing agents such as DTT, BME and TCEP to remove the biotin label.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.
