compound introduction
Carboxy-PEG2-sulfonic acid is a PEG derivative containing a carboxylic acid and sulfonic acid end group. The terminal carboxylic acid can participate in reactions with primary amines in the presence of activators such as EDC and DCC. Sulfonic acid can undergo esterification, halogenation and replacement reactions. The hydrophilic PEG linker increases the compound's water solubility in aqueous media.
