Used in the treatment of Parkinson’s disease, this chemical works as a COMT inhibitor, helping to prolong the effect of levodopa by preventing its breakdown in the body. It is typically administered alongside levodopa and carbidopa to enhance motor function and reduce "off" periods in patients with fluctuating responses to therapy. This agent improves the consistency of levodopa delivery to the brain, leading to smoother symptom control and better quality of life for individuals with advanced Parkinson’s disease.