Used in pharmaceutical research as a key intermediate in the synthesis of serotonin receptor modulators, particularly 5-HT6 and 5-HT7 antagonists. It serves as a structural scaffold in developing compounds targeting cognitive disorders, depression, and neurodegenerative diseases like Alzheimer's. Its fluorinated indole core enhances blood-brain barrier penetration and metabolic stability, making it valuable in CNS drug design. Also employed in medicinal chemistry for structure-activity relationship (SAR) studies to optimize potency and selectivity of novel therapeutics.