N-(Hydroxy-PEG3)-N-bis(PEG4-t-butyl ester) is a branched PEG linker with a terminal hydroxy group and two t-butyl esters. The hydroxy group enables further derivatization or replacement with other reactive functional groups. The t-butyl protected carboxyl groups can be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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