Inosine 5′-diphosphate sodium salt is widely used in biochemical research, particularly in studies involving nucleotide metabolism and enzymatic reactions. It serves as a substrate for various enzymes, such as kinases and phosphatases, helping to understand their mechanisms and functions. This compound is also utilized in the synthesis of nucleic acids and in the preparation of nucleotide analogs for therapeutic and diagnostic purposes. Additionally, it plays a role in cell signaling pathways and energy transfer processes, making it valuable in cellular and molecular biology experiments. Its applications extend to drug development, where it aids in the design of compounds targeting nucleotide-related pathways.