T-Boc-aminooxy-PEG-Methane is a compound that belongs to the class of polyethylene glycol derivatives. It contains several functional groups, including the tert-butyloxycarbonyl (Boc) protecting group, the aminooxy group (-ONH2), and the methoxy group (-OCH3). These functional groups make T-Boc-aminooxy-PEG-Methane useful in pharmaceutical research and development, specifically in drug delivery and bioconjugation applications. The Boc protecting group can be easily removed under mild conditions, allowing for the attachment of other molecules to the aminooxy group. The PEG chain provides solubility and can improve the pharmacokinetics of the conjugated drug. Additionally, the aminooxy group can be used to selectively label biomolecules or to crosslink proteins.