Phenyl 2-ethylbutanoate is primarily used as a flavoring agent in the food and beverage industry. It imparts a fruity and sweet aroma, making it suitable for enhancing the flavor profiles of various products such as candies, baked goods, and soft drinks. Additionally, it finds application in the fragrance industry, where it is incorporated into perfumes and cosmetic products to provide a pleasant, fruity scent. Its stability and compatibility with other ingredients make it a versatile component in both flavor and fragrance formulations.