S-acetyl-PEG3-phosphonic acid ethyl ester is a PEG derivative that contains a sulfur-acetyl group and a phosphonic acid ethyl ester. The sulfur-acetyl can be deprotected to generate a thiol group, which shows strong affinity towards transition metal surfaces. Both the thiol and phosphonic acid are used for surface modification. The hydrophilic PEG linker can increase the solubility of a compound in aqueous media and improve the hydrophilicity of the surfaces.
Axispharm offers 3000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.