Product Description
4-Arm PEG-amino glutamic acid (4-arm PEG-GAA) is a multiarm PEG derivative with carboxylic acid groups at each terminal of the eight arms connected to one pentaerythritol core. There is a C3 amide linkage between PEG and the glutaric acid COOH group. PEG acid can be used to react with amine groups with peptide coupling reagents such as NHS and DCC, EDC.
