4-Methylcoumarin is widely used in the fragrance and flavor industry due to its pleasant, sweet, and hay-like aroma. It serves as a key ingredient in perfumes, cosmetics, and personal care products to enhance scent profiles. Additionally, it is utilized in food flavorings to impart a warm, nutty, or vanilla-like taste. In the pharmaceutical sector, it is studied for its potential biological activities, including anti-inflammatory and antioxidant properties, making it a candidate for therapeutic applications. It is also employed in organic synthesis as a building block for creating more complex chemical compounds.