8-Azido-ATP (trisodium)

8-Azido-ATP (8-N3-ATP) trisodium, a photoreactable nucleotide analog, is useful for the identification of proteins, such as DNA-dependent RNA polymerase. 8-Azido-ATP trisodium is a click chemistry reagent that contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. 8-Azido-ATP trisodium can also undergo strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules containing DBCO or BCN groups.