N-Phenylthiobenzamide is primarily utilized in organic synthesis as a key intermediate for the preparation of various heterocyclic compounds. It plays a significant role in the synthesis of thiazole derivatives, which are important in the development of pharmaceuticals and agrochemicals. Additionally, it is employed in the study of reaction mechanisms, particularly in the formation of thioamides and related sulfur-containing compounds. Its applications extend to material science, where it is used in the development of novel polymers and coatings with specific properties.