N-(Azido-PEG2)-N-PEG4-t-butyl ester is a branched PEG linker with an azide group and a t-butyl ester group. The azide group reacts with alkyne or cyclooctyne in Click Chemistry reaction. The amino group is reactive with carboxylic acids, activated NHS esters, and carbonyls. . Please contact us for GMP-grade inquiries.
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