Pentadecanophenone is primarily utilized in the synthesis of organic compounds, particularly in the production of specialty chemicals and intermediates. It serves as a key building block in the creation of liquid crystals, which are essential components in display technologies such as LCD screens. Additionally, it is employed in the development of pharmaceuticals, where it acts as a precursor in the synthesis of various active pharmaceutical ingredients (APIs). Its application extends to the fragrance industry, where it is used in the formulation of long-lasting scents due to its stable aromatic structure. In research, Pentadecanophenone is often used as a standard or reference compound in analytical chemistry for method development and calibration.