4-Benzyloxy-1-butanol is primarily used as an intermediate in organic synthesis, particularly in the production of various pharmaceuticals and fine chemicals. Its benzyloxy group makes it a useful protecting group for alcohols in multi-step synthetic processes, ensuring selective reactions without affecting other functional groups. Additionally, it serves as a building block in the synthesis of complex molecules, including bioactive compounds and polymers. Its applications also extend to the development of specialty chemicals used in research and industrial settings, where precise chemical modifications are required.