Benzilic acid hydrazide is primarily used in organic synthesis as a building block for the preparation of various heterocyclic compounds. It serves as a key intermediate in the development of pharmaceuticals, particularly in the synthesis of drugs with potential antibacterial, antifungal, and anticancer properties. Additionally, it is utilized in the creation of hydrazone derivatives, which are explored for their applications in medicinal chemistry and as ligands in coordination chemistry. Its role in the formation of Schiff bases also makes it valuable in the study of chemical reactions and material science.