Used as a key intermediate in the synthesis of pharmaceuticals and biologically active compounds, particularly in the development of indole-based drugs. It serves as a building block in the preparation of serotonin receptor modulators and other neuroactive agents. Its aldehyde and acetyl functional groups allow for diverse chemical modifications, making it valuable in medicinal chemistry for creating libraries of compounds for drug screening. Also applied in the synthesis of fluorescent dyes and agrochemicals due to its aromatic and reactive structure.