Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of analgesics and anti-inflammatory drugs. It serves as a building block in organic reactions where the aldehyde group enables condensation reactions to form Schiff bases or undergo reduction to produce amines. Commonly applied in the development of dyes and fluorescent probes due to its aromatic structure and reactivity. Also utilized in the preparation of specialty polymers and agrochemicals where functionalized benzene derivatives are required.