Palmitic Acid Alkyne

Palmitic Acid Alkyne (CAS No.: 99208-90-9) is an alkyl chain-modified fatty acid analog widely utilized as a chemical probe and linker in biomedical research, particularly in the context of targeted protein degradation and lipid signaling studies. As a click chemistry-compatible reagent bearing a terminal alkyne functionality, it enables highly selective copper-catalyzed azide–alkyne cycloaddition reactions, facilitating efficient bioconjugation with azide-containing molecules for the construction of proteolysis-targeting chimeras and other functional assemblies. This compound is closely associated with the study of protein S-palmitoylation, a post-translational modification that regulates protein localization, stability, and protein–protein interactions, and it has been employed to label, enrich, and identify palmitoylated proteins in complex biological systems. Through its incorporation into lipid-modified proteins, Palmitic Acid Alkyne supports the investigation of signaling pathways influenced by lipidation-dependent membrane targeting and protein trafficking. Although precise potency metrics are not typically defined for this type of chemical tool, its functional activity is generally observed in the nanomolar to micromolar concentration range depending on the experimental system. It is broadly applied in cell-based assays and biochemical studies to elucidate mechanisms of protein modification and degradation, and in some cases in disease-relevant models to explore lipid-mediated regulatory processes, with concentrations or dosing regimens tailored to specific research objectives.