3-Cyanobenzoic acid is primarily used as an intermediate in the synthesis of various pharmaceuticals and organic compounds. It serves as a building block in the production of active pharmaceutical ingredients (APIs), particularly in the development of drugs targeting neurological and cardiovascular disorders. Additionally, it is utilized in the manufacture of agrochemicals, such as herbicides and pesticides, due to its ability to act as a precursor in the synthesis of complex molecules. In material science, it is employed in the creation of specialty polymers and coatings, where its functional groups contribute to enhanced material properties. Its versatility also extends to research laboratories, where it is used as a reagent in organic synthesis and chemical studies.