Quinoline yellow is a synthetic dye commonly used as a food coloring agent. It is known for its bright yellow hue and is often found in products like candies, beverages, and sauces. The dye is identified by the code E104 in the European Union and is regulated for safety in food applications. This dye is derived from quinoline, a compound that has various applications in chemistry and pharmaceuticals. While quinoline yellow is generally considered safe for consumption, some individuals may experience allergic reactions, leading to restrictions in certain countries.