3,4-Dichlorobenzonitrile is primarily used as an intermediate in the synthesis of various agrochemicals and pharmaceuticals. In the agricultural sector, it plays a crucial role in the production of herbicides and fungicides, helping to protect crops from weeds and fungal infections. Its chemical structure allows it to be a key building block in creating compounds that effectively target and inhibit the growth of unwanted plants and pathogens. In the pharmaceutical industry, it is utilized in the development of active ingredients for medications, particularly those designed to treat infections or other diseases. Its versatility in chemical reactions makes it valuable for creating complex molecules with specific biological activities. Additionally, it may be employed in research and development for exploring new chemical entities with potential applications in various fields.