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5-(Trifluoromethyl)indole is a valuable heterocyclic building block widely utilized in modern medicinal chemistry and organic synthesis. With the chemical formula C9H6F3N and a molecular weight of approximately 187.14 g/mol, this compound features an indole core substituted with a highly electronegative trifluoromethyl group at the fifth position. Its specific CAS registry number is 10205-68-0, which serves as its unique identifier for regulatory and commercial tracking purposes globally. The introduction of the trifluoromethyl moiety significantly alters the physicochemical properties of the parent indole structure, often enhancing lipophilicity, metabolic stability, and binding affinity to biological targets.
This reagent plays a pivotal role in the development of novel pharmaceutical agents, particularly in the design of kinase inhibitors, serotonin receptor modulators, and anti-inflammatory drugs. Researchers frequently employ 5-(trifluoromethyl)indole as a key intermediate in multi-step synthetic routes to construct complex bioactive scaffolds. The electron-withdrawing nature of the CF3 group influences the electronic distribution within the aromatic system, thereby facilitating specific nucleophilic or electrophilic substitution reactions that are crucial for tailoring drug candidates. Furthermore, it finds applications in agrochemical research for creating pesticides with improved efficacy and reduced environmental persistence.
In laboratory settings, high-purity grades of this compound are essential for rigorous structure-activity relationship (SAR) studies. It allows chemists to explore how fluorine incorporation affects pharmacokinetic profiles without drastically changing the steric footprint of the molecule. Due to its versatility, 5-(trifluoromethyl)indole is stocked by major chemical suppliers and distributed to academic institutions and pharmaceutical companies worldwide. Proper handling requires standard safety precautions, including the use of personal protective equipment, as with most organic halides. As the demand for fluorinated compounds grows in drug discovery pipelines, this indole derivative remains a cornerstone material for advancing therapeutic innovations across various disease areas.