Used as an intermediate in organic synthesis, particularly in the pharmaceutical industry for constructing complex molecules. Its anhydride functionality allows it to readily form esters and amides, making it valuable in the development of active pharmaceutical ingredients. It is also employed in the synthesis of specialty polymers and resins where controlled branching and specific reactivity are required. Due to the isobutyl group, it imparts hydrophobic character and steric influence, which can be leveraged to fine-tune the solubility and stability of final products.