N-Ethylisopropylamine is primarily utilized as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its role as a building block allows for the creation of complex molecules, often contributing to the development of active pharmaceutical ingredients (APIs). In the pharmaceutical industry, it is employed in the synthesis of various drugs, including those targeting neurological and cardiovascular conditions. Additionally, it finds application in the preparation of herbicides, pesticides, and other crop protection agents, enhancing agricultural productivity. Its use in chemical research also extends to the development of novel compounds and materials, where its reactivity and structural properties are leveraged for innovation.