S-acetyl-PEG-OH

This series comprises hydroxyl-terminated PEG reagents featuring a protected thiol group (S-acetyl) for stable storage and controlled activation. The S-acetyl group can be readily deprotected to release a free thiol for conjugation with maleimides or gold surfaces, while the hydroxyl end allows for further functionalization. These reagents are ideal for sequential bioconjugation strategies in protein modification and nanomaterial engineering.