N3-PEG9-CH2CH2NH2

Amino-PEG9-azide is a water soluble crsoolinking reagent containing an amino with an azide group. Amino group (NH2) is reactive with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The azide group can react with alkyne, BCN, DBCO via Click Chemistry to form a stable triazole linkage.