NH-(PEG4-t-butyl ester)2

Description

NH-bis(PEG4-t-butyl ester) is a very useful PEG reagent containing an amino group with two t-butyl esters. The amino groups is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde), t-butyl protected carboxyl group can be deprotected under acidic conditions.