GDP-D-mannose disodium salt is widely used in biochemical research, particularly in studies involving glycosylation processes. It serves as a crucial substrate for enzymes like mannosyltransferases, which are involved in the biosynthesis of glycoproteins and glycolipids. This compound is essential for understanding and manipulating metabolic pathways related to carbohydrate metabolism. Additionally, it is utilized in the production of complex carbohydrates and glycoconjugates, which have applications in drug development and vaccine design. Its role in cell signaling and immune response studies further highlights its importance in biomedical research.