2-Butylsuccinic acid is primarily used as an intermediate in the synthesis of various organic compounds, including polymers and resins. It plays a role in the production of plasticizers, which are added to materials like PVC to increase their flexibility and durability. Additionally, it is utilized in the manufacture of coatings and adhesives, where it contributes to improved performance and stability. In the pharmaceutical industry, it serves as a building block for developing certain drugs and active pharmaceutical ingredients. Its applications also extend to the field of lubricants, where it helps enhance the properties of synthetic oils.