4-Arm PEG-SAA

Synonyms: Four-Arm polyethylene glycol-Succinamide Acid; Four-Arm PEG-SAA; Four-Arm polyethylene glycol-SAA

Four-Arm polyethylene glycol-Succinamide Acid (4-Arm PEG-SAA) is a multiarm PEG derivative with succinamide acid groups at each terminal of the four arms connected to one pentaerythritol core. It is usually a viscous liquid or solid powder, depending on the molecular weight. It is soluble in most organic solvents and has good solubility in water. It needs to be dried at -20℃ away from light and stored for a long time. There is a C3 amide linkage between PEG and the succinamide acid COOH group. PEG acid can be used to react with amine groups with peptide coupling reagents such as NHS and DCC, EDC. Four arm polyethylene glycol derivatives have a variety of active groups that can be used to modify proteins, peptides and other materials through their functional groups.