4-tert-Butylbenzenethiol is an organosulfur compound consisting of a benzene ring substituted with a thiol (-SH) group and a bulky tert-butyl (-C(CH₃)₃) group at the para position. It is widely used as an intermediate in organic synthesis, polymer chemistry, and as a stabilizer in certain industrial applications. The thiol group makes it reactive in thiolation and coupling reactions, while the tert-butyl group provides steric hindrance, affecting its chemical behavior.