N4-(n-Palmitoyl)-4’-azido-2’-deoxy-2’-fluoro-arabinocytidine is a cytidine nucleoside analog. Cytidine analogs have a mechanism of inhibiting DNA methyltransferases (such as Zebularine, HY-13420), and have potential anti-metabolic and anti-tumor activities[1]. N4-(n-Palmitoyl)-4’-azido-2’-deoxy-2’-fluoro-arabinocytidine is a click chemistry reagent, it contains an Azide group and can undergo copper-catalyzed azide-alkyne cycloaddition reaction (CuAAc) with molecules containing Alkyne groups. Strain-promoted alkyne-azide cycloaddition (SPAAC) can also occur with molecules containing DBCO or BCN groups.