15-Azido-pentadecanoic acid, also known as Azido Palmitic Acid, serves as a click chemistry reagent due to its azide group. This compound is instrumental in the identification and characterization of post-translationally palmitylated proteins through a straightforward two-step labeling and detection methodology [1]. It can partake in copper-catalyzed azide-alkyne cycloaddition reactions (CuAAc) with alkyne-bearing molecules and also engage in strain-promoted alkyne-azide cycloaddition (SPAAC) with molecules featuring DBCO or BCN groups, showcasing its versatility in biochemical applications.