Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of active pharmaceutical ingredients (APIs) such as antihypertensive and anti-inflammatory drugs. It serves as a building block in organic reactions due to the reactivity of the aldehyde group, enabling transformations like condensation, reduction, and nucleophilic addition. Commonly employed in the preparation of agrochemicals, including herbicides and fungicides, thanks to its aromatic structure with chlorine and methyl substituents that enhance bioactivity. Also utilized in the fragrance and dye industries for constructing complex aromatic molecules with desired sensory or color properties. Its selective reactivity allows for efficient derivatization in multi-step synthetic routes.