H2N-PEG-SH (MW 20000)

H2N-PEG-SH (MW 20000) (Amine-PEG-Thiol (MW 20000) ) is a linear heterobifunctional polyethylene glycol derivative containing thiol and amine groups. This compound serves as a crucial crosslinking or bioconjugation reagent with PEG chains. The thiol group, or ?SH, mercapto group, selectively reacts with maleimide, OPSS, ethene sulfonate, and transition metal surfaces such as gold and silver.