Used as a key intermediate in organic synthesis, particularly in the preparation of pharmaceuticals and agrochemicals. Its cyclic structure and reactive carbonyl group make it valuable for constructing complex molecules through nucleophilic addition or condensation reactions. Commonly employed in the synthesis of active pharmaceutical ingredients (APIs) where oxygen-containing heterocycles are needed. Also utilized in fragrance and flavor chemistry due to its ability to form derivatives with pleasant sensory properties. Serves as a solvent or reagent in specialized reactions requiring a polar, aprotic environment with moderate stability.