4arm-PEG-DBCO

4 arm-Polyethylene glycol-DBCO,4 arm-PEG-DBCO，DBCO-PEG-4 arm from ruixi 4-arm polyethylene glycol-DBCO  is a multi-arm polyethylene glycol derivative with DBCO
 at each end of the four arms connected to a pentaerythritol nucleus.4 arm-peg2000-DBCO
,4 arm-peg5000-DBCO and so on.The dibenzocyclooctyne group (DBCO) reacts with molecules containing azide groups (–N3) in a Copper-free Click Chemistry. DBCO has very high reaction selectivity toward azide, enabling its use in modifying biomolecules including peptide, protein, enzyme, live cells, whole organisms etc. At physiological temperature and pH ranges, the DBCO group does not react with amine or hydroxyl, and DBCO also reacts with the azide group much faster than with free thiol groups. DBCO is also known as ADIBO (= Azadibenzocyclooctyne) or DIBAC (= Dibenzoazacyclooctyne). 

msds of 4 arm-PEG-DBCO