Sodium isonicotinate is primarily utilized in the pharmaceutical industry as a key intermediate in the synthesis of various drugs, particularly those targeting tuberculosis. It plays a crucial role in the production of isoniazid, a first-line medication for treating and preventing tuberculosis infections. Additionally, its chemical properties make it suitable for use in organic synthesis, where it serves as a building block for creating complex molecules in research and development. In industrial applications, it is sometimes employed in the formulation of corrosion inhibitors, helping to protect metal surfaces from degradation. Its versatility also extends to the field of agrochemicals, where it contributes to the development of certain pesticides and herbicides.