3,5,5-Trimethylhexanoic Acid is used for modifying alkyd resins to prevent discolor and to keep flexibility and resistance to aging. It is used as a chemical intermediate. Its derivatives, acyl halides, anhydrides, esters, amides and nitriles, are used in making target products such as flavoring agents, pesticides, cosmetic ingredients, dyes, textile treatment agents, fungicides, and pharmaceuticals through further reactions of substitution, catalytic reduction, metal hydride reduction, diborane reduction, keto formation with organometallic reagents, electrophile bonding at oxygen, and Claisen condensation on carboxylic group.