Used as an intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the production of herbicides and fungicides. It serves as a building block in organic reactions due to the reactive aldehyde group and the substituted aromatic ring, enabling the formation of more complex molecules. Commonly employed in condensation reactions, such as aldol or Wittig reactions, to introduce the aromatic moiety into larger structures. Also utilized in the development of dyes and fragrances where substituted benzaldehyde derivatives are required for specific odor or color properties.