2'-C-Methylguanosine is primarily utilized in the field of antiviral research, particularly in the development of treatments for RNA viruses. It serves as a nucleoside analog, which means it can interfere with the replication process of viral RNA. By incorporating itself into the viral RNA chain, it effectively halts further RNA synthesis, thereby inhibiting the virus's ability to proliferate. This mechanism is especially valuable in the study and treatment of diseases caused by RNA viruses, such as hepatitis C. Additionally, it is explored for its potential in cancer therapy, where it may help in targeting rapidly dividing cancer cells by disrupting their RNA synthesis. Researchers also investigate its role in enhancing the efficacy of existing antiviral drugs when used in combination therapies.