p-Trifluoromethylthiophenol (CAS No. 825-83-2) is an organosulfur compound with a trifluoromethyl (-CF₃) group attached to a thiophenol (-SH) structure at the para position. It is commonly used as a building block in pharmaceuticals, agrochemicals, and material science. The trifluoromethyl group enhances the compound’s lipophilicity and metabolic stability, making it valuable in drug discovery and synthesis. Due to its thiol (-SH) functionality, it can participate in various chemical reactions, including nucleophilic substitutions and coupling reactions.