3-(Ethylthio)picolinic acid is primarily used in the field of agrochemicals as an intermediate in the synthesis of herbicides. It plays a crucial role in the development of compounds that target weed control in agricultural settings, enhancing crop protection and yield. Additionally, it finds application in the research and development of novel chemical entities for pest management, contributing to advancements in sustainable farming practices. Its chemical structure allows it to act as a building block for creating more complex molecules with specific biological activities.