Monoisopropyl fumarate is primarily used in the pharmaceutical and chemical industries. In pharmaceuticals, it serves as an intermediate in the synthesis of active pharmaceutical ingredients (APIs), particularly in the production of drugs targeting autoimmune diseases like psoriasis and multiple sclerosis. Its role in these formulations is often linked to its ability to modulate immune responses. Additionally, it is utilized in the production of polymers and resins, where it acts as a monomer or cross-linking agent, enhancing the durability and stability of the final products. In the cosmetic industry, it is sometimes incorporated into formulations for its potential skin-conditioning properties. Its versatility makes it a valuable component in various industrial applications.