Thiol-PEG1-acid

Thiol-PEG1-acid (SH-PEG1-COOH) is a PEG derivative consisting of a thiol (-SH), 1 PEG unit, and a carboxyl (-COOH) . The thiol is a highly reactive chemical group that can react specifically with a variety of molecules to form stable covalent bonds. The carboxyl group can easily form stable amide bonds with amino groups, and can also form ester bonds with hydroxyl groups.