D-myo-Inositol-1,2-diphosphate sodium salt is primarily used in biochemical research to study cellular signaling pathways. It plays a role in understanding the function of inositol phosphates in processes like cell growth, metabolism, and communication. This compound is also utilized in experiments investigating enzyme activity, particularly those involving phosphatases and kinases. Additionally, it serves as a reference standard in analytical techniques such as HPLC and mass spectrometry for identifying and quantifying inositol derivatives in biological samples. Its application extends to the development of therapeutic strategies targeting inositol-related disorders, including metabolic and neurological conditions.