Heptyl isocyanate is primarily used in the synthesis of various organic compounds, particularly in the production of agrochemicals and pharmaceuticals. It serves as a key intermediate in the creation of herbicides, pesticides, and fungicides, contributing to effective crop protection and pest management. In the pharmaceutical industry, it is utilized in the development of active pharmaceutical ingredients (APIs) and other specialized chemicals. Additionally, it finds application in polymer chemistry, where it is used to modify or enhance the properties of certain polymers, improving their performance in specific industrial applications. Its reactivity with amines and alcohols makes it valuable in organic synthesis for constructing complex molecular structures.