Used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its ester groups allow for easy modification in multi-step reactions, making it valuable in building complex molecules. Commonly employed in the synthesis of active pharmaceutical ingredients (APIs) where the malonate backbone is used to construct carboxylic acid derivatives or introduce alkyl side chains. Also utilized in the preparation of specialty polymers and as a building block in the development of flavor and fragrance compounds due to its reactivity in condensation and esterification processes.