Alloxantin dihydrate is primarily used in biochemical research and laboratory settings. It serves as a reagent in studies related to redox reactions and oxidative stress, helping to understand cellular mechanisms and metabolic processes. Its role in modulating antioxidant activity makes it valuable for investigating the effects of oxidative damage in biological systems. Additionally, it is utilized in the synthesis of certain organic compounds and in analytical chemistry for its unique redox properties. Researchers also employ it to study enzyme kinetics and the behavior of free radicals in various biological contexts.