1,6-Diphenyl-1,6-hexanedione is primarily used in organic synthesis as a key intermediate for the preparation of various complex molecules. It serves as a building block in the production of pharmaceuticals, particularly in the synthesis of compounds with potential therapeutic properties. Additionally, it is employed in the development of organic materials, including polymers and dyes, due to its ability to form stable and versatile structures. Its role in cross-coupling reactions and as a precursor for heterocyclic compounds makes it valuable in research and industrial applications.