DAPOA is a click chemistry reagent containing an azide group. DAPOA can be used in peptide synthesis as a linker that can be further modified at the azido-groups using Staudinger ligation or click-chemistry[1]. It contains an azide group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing alkyne groups. It can also undergo ring strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.
References
[1] Meng G, et al. Modular click chemistry libraries for functional screens using a diazotizing reagent. Nature. 2019 Oct;574(7776):86-89. DOI:10.1038/s41586-019-1589-1
