4-Hexylpyridine is primarily used in organic synthesis as a building block for more complex chemical compounds. It serves as a precursor in the production of pharmaceuticals, particularly in the development of drugs with specific biological activities. Additionally, it is utilized in the creation of ligands for metal coordination complexes, which are important in catalysis and material science. In research, it is employed as a model compound to study the behavior of pyridine derivatives in various chemical reactions. Its hydrophobic alkyl chain makes it useful in surfactant applications, where it can modify surface properties. Furthermore, it finds use in the synthesis of agrochemicals, contributing to the development of pesticides and herbicides.