Guanosine-5-diphosphate disodium salt is widely used in biochemical research, particularly in studies involving nucleotide metabolism and enzyme kinetics. It serves as a substrate or cofactor in enzymatic reactions, aiding in the investigation of GTP-binding proteins and signaling pathways. This compound is also employed in cell culture applications to support cellular processes that require guanosine nucleotides. Additionally, it plays a role in synthesizing RNA and studying nucleic acid interactions, making it valuable in molecular biology and genetic research. Its stability and solubility in aqueous solutions enhance its utility in various experimental setups.