Used as a reagent in analytical chemistry to detect and quantify reducing substances, especially in carbohydrate analysis. It reacts with reducing sugars to produce a blue-colored complex, allowing spectrophotometric measurement. Commonly applied in food and beverage industries to determine sugar content. Also utilized in biochemical assays for estimating total phenolic compounds and antioxidants in plant extracts and pharmaceuticals. Its colorimetric response makes it valuable for quick, reliable quantification in quality control and research settings.