Used primarily as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and fine chemicals. Its ester groups allow for easy modification, making it valuable in constructing complex molecules. Commonly employed in the synthesis of barbiturates and other central nervous system depressants. Also utilized in fragrance and flavor industries due to its ability to form ester-based aroma compounds. Serves as a building block in the preparation of substituted malonic acid derivatives for research and industrial applications.