4-Hydroxybenzonitrile is widely used in the synthesis of pharmaceuticals, particularly as an intermediate in the production of various drugs. It plays a key role in the manufacture of compounds with antibacterial and antifungal properties. Additionally, it is utilized in the development of agrochemicals, including herbicides and pesticides, due to its ability to act as a building block for more complex molecules. In the field of organic chemistry, it serves as a precursor for the synthesis of dyes and pigments, contributing to the production of colorants for textiles and other materials. Its versatility also extends to the creation of specialty chemicals used in industrial applications.