Description
t-Butyl-ester-PEG4-(CH2)3OH is a bifunctional PEG linker featuring a terminal hydroxyl group and a t-butyl-protected carboxyl group. The PEG4 spacer enhances hydrophilicity and solubility in aqueous media, while the t-butyl ester provides stability during synthesis and can be selectively removed under acidic conditions.
Applications
t-Butyl-ester-PEG4-(CH2)3OH is used in drug delivery, surface modification, and bioconjugation. The terminal hydroxyl allows for further derivatization, and the t-butyl ester deprotection enables site-specific conjugation to form esters or amides in targeted synthesis applications.