Adenosine-5′-diphosphate disodium salt is a chemical compound used in biochemical research and as a reagent in various laboratory applications. It is a nucleotide derivative involved in cellular metabolism and the transfer of energy within cells. In research settings, it is often used to study enzyme activities, signal transduction pathways, and nucleotide metabolism. As a disodium salt, it is more water-soluble compared to the free acid form, allowing for easier handling and preparation of solutions.