Ethyl thiocyanate is primarily used in organic synthesis as a building block for the production of various chemical compounds. It serves as a precursor in the manufacture of pharmaceuticals, particularly in the synthesis of certain drugs and active pharmaceutical ingredients. Additionally, it is employed in the agrochemical industry for the development of pesticides and herbicides, where it acts as an intermediate in the creation of compounds that protect crops from pests and weeds. In research and development, ethyl thiocyanate is utilized in the study of organic reactions and mechanisms, contributing to advancements in chemical sciences. Its role in these applications underscores its importance in both industrial and academic settings.