Ethoxymethylenemalononitrile is primarily used as a key intermediate in the synthesis of various heterocyclic compounds, particularly in the production of pharmaceuticals and agrochemicals. It plays a significant role in the formation of pyrimidine derivatives, which are essential in the development of antiviral and anticancer drugs. Additionally, it is utilized in the preparation of herbicides and fungicides, contributing to crop protection and agricultural productivity. Its reactivity and ability to form complex structures make it valuable in organic synthesis, enabling the creation of diverse chemical entities with potential biological activities.