Thiol-PEG-Hydrazide (HS-PEG-HZ, SH-PEG-HZ), MW 10K is a thiol-functional polyPEG derivative, thiol or SH, thiol or thiol are selectively combined with maleimide, Surface reactions of OPSS, vinyl sulfone and transition metals such as gold and silver. Hydrazine PEG is also used to pegylate carboxyl, carboxylic acid groups.
AxisPharm offers 5000+ PEG Linkers with high purity. Different kinds of PEG Reagents may be available by custom synthesis.