4-Ethylcyclohexanol is primarily used as an intermediate in the synthesis of various organic compounds. It plays a significant role in the production of fragrances and flavoring agents due to its ability to impart a pleasant odor. Additionally, it is utilized in the manufacturing of plasticizers, which are essential for improving the flexibility and durability of plastics. In the pharmaceutical industry, it serves as a building block for the synthesis of certain drugs and active pharmaceutical ingredients. Its chemical properties also make it suitable for use in research and development, particularly in the study of organic reactions and material science.