Product numbers 10041, Amino-dPEG®4-t-boc hydrazide, 10957, Amino-dPEG®8-t-boc hydrazide, and 10958, Amino-dPEG®12-t-boc hydrazide, are cross-linking compounds that react with an amine reactive group (carbonyl, carboxylic acid, active ester of a carboxylic acid) on the amine side of the molecule and then (following deprotection of the t-boc group) with an aldehyde or ketone to form a hydrazone bond.
