Description
4-Arm PEG-Phenol has 4 phenol molecules attached to the four arms through an amide bond, at the para or 4-position. 4-Arm PEG-Phenol is the same as 4-Arm PEG-Tyramine, and both reagents started with tyramine that is conjugated to PEG via amide bonds formed by the amine of tyramine and a carboxylic acid group of PEG acid.
