N-(Azido-PEG2)-N-Boc-PEG4-acid is a branched PEG analogue with a terminal azido group, Boc protected amino group, and a terminal carboxylic acid. The azide group enables PEGylation via Click Chemistry. The protected amine can be deprotected by acidic conditions. The terminal carboxylic acid can be reacted with primary amino groups in the presence of activators (e.g. EDC, or DCC) to form a stable amide bond. References: Sano K, Nakajima T, Miyazaki K, Ohuchi Y, Ikegami T, Choyke PL, Kobayashi H. Short PEG-linkers improve the performance of targeted, activatable monoclonal antibody-indocyanine green optical imaging probes. Bioconjug Chem. 2013 May 15;24(5):811-6. doi: 10.1021/bc400050k. Epub 2013 May 3. PubMed PMID: 23600922; PubMed Central PMCID: PMC3674550.

纯度：≥98%

CAS：2093153-82-1