H2N-PEG-SH (MW 40000)

H2N-PEG-SH (MW 40000) (Amine-PEG-Thiol (MW 40000) ) is a linear heterobifunctional polyethylene glycol derivative that contains both thiol and amine groups. This compound serves as a crucial PEGylated cross-linking or bioconjugation reagent. The thiol or ?SH group selectively reacts with maleimide, OPSS, vinyl sulfone, and surfaces of transition metals (including gold, silver, etc.) .