Guanosine 5'-phosphate disodium salt hydrate is widely used in molecular biology and biochemistry research as a precursor for the synthesis of RNA and DNA. It plays a critical role in studies involving nucleotide metabolism, enzyme kinetics, and cellular signaling pathways. In the food industry, it serves as a flavor enhancer, often combined with other nucleotides to amplify umami taste in processed foods. Additionally, it is utilized in the production of pharmaceuticals, particularly in the development of antiviral and anticancer drugs, due to its involvement in nucleotide-based therapies. Its application extends to diagnostic assays, where it aids in the detection and quantification of nucleic acids.