SAS-PEG-SAS (PEG-bis-Succinimidyl Amido Succinate), MW 2K is a linear homobifunctional polymer with two succinimide (NHS) groups with a C2 between the PEG and the NHS ester Aliphatic amide bonds.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.