Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of active pharmaceutical ingredients (APIs) where the sulfonyl chloride group enables attachment to amines or alcohols, forming sulfonamides or sulfonate esters. Its fluorinated aromatic structure enhances metabolic stability and binding affinity in drug molecules. Commonly applied in the preparation of agrochemicals and functional materials requiring specific electronic or steric properties. The compound’s reactivity makes it valuable in cross-coupling reactions and building complex molecules in medicinal chemistry research.