Description
N-(Hydroxy-PEG3)-N-Boc-PEG4-t-butyl ester is a reagent grade small PEG compound with a t-butyl ester, a hydroxy group, and an n-Boc moiety. The hydroxy groups is derivatized or replaced with other reactive functional groups. Under acidic conditions, the t-butyl-protected carboxyl group and N-Boc is deprotected.