Used primarily in the treatment of hyperuricemia associated with gout, this compound acts as a selective inhibitor of xanthine oxidase, the enzyme responsible for converting hypoxanthine to xanthine and then to uric acid. By inhibiting this enzyme, it effectively lowers serum uric acid levels, helping to prevent gout flares and the formation of urate crystals. Its selectivity may reduce the risk of certain adverse effects compared to non-selective inhibitors. It is prescribed for patients who do not respond adequately to or cannot tolerate other urate-lowering therapies.