Triisopropyl borate is primarily used as a reagent in organic synthesis, particularly in the preparation of boronic esters and other boron-containing compounds. It serves as a key intermediate in the production of pharmaceuticals, agrochemicals, and specialty chemicals. In the electronics industry, it is utilized as a precursor in the synthesis of boron-doped semiconductors and as a coating material for optical fibers to enhance their performance. Additionally, it finds application in the manufacture of flame retardants and as a catalyst or stabilizer in various chemical reactions. Its role in cross-coupling reactions, such as Suzuki-Miyaura coupling, is also significant for creating complex organic molecules.