Used in the synthesis of pharmaceutical intermediates, particularly in the development of tryptamine and indole-based drugs. Acts as a building block for bioactive molecules, including serotonin receptor modulators and anti-inflammatory agents. Employed in research for the preparation of fluorescent probes due to its indole scaffold, which can enhance detection sensitivity in biological imaging. Also utilized in agrochemical research for designing novel plant growth regulators and pesticides. Its aldehyde group allows for easy functionalization, making it valuable in combinatorial chemistry and drug discovery.