Product Description
Amine-PEG-tert Butyl protected carboxylic acid (NH2-PEG-COOtBu) is a linear heterobifunctional PEG reagent with one amine and one tertiary butyl ester protected carboxylic acid. It is a useful crosslinking reagent with a PEG spacer. The protected acid can be regenerated by mild acidic or basic conditions. Typically, the product is offered as its HCl or TFA salt.