3,5-Dibromotoluene is primarily used as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its bromine atoms make it a valuable building block for creating more complex molecules through substitution reactions. In the pharmaceutical industry, it is utilized in the synthesis of active pharmaceutical ingredients (APIs) where specific brominated aromatic structures are required. Additionally, it finds application in the development of dyes, pigments, and other specialty chemicals due to its ability to introduce bromine into organic frameworks. Its role in research and development is also notable, as it serves as a reagent in various chemical reactions to study reaction mechanisms and develop new synthetic pathways.