Used primarily as an intermediate in the synthesis of pharmaceuticals and agrochemicals. It serves as a building block in the development of bioactive molecules due to its indole core, which is commonly found in compounds with biological activity. Its derivatives are explored for potential use in medicinal chemistry, particularly in the design of serotonin receptor modulators and kinase inhibitors. Also employed in research settings for the preparation of fluorescent probes and functional materials owing to the indole ring’s favorable photophysical properties.