4-Bromo-2-chlorophenol is an organic compound with the molecular formula C6H4BrClO. It is a halogenated phenol derivative, specifically a dihalophenol, featuring both bromine and chlorine substituents on the aromatic ring. This compound typically appears as a solid at room temperature. Its primary role is as a versatile building block in organic synthesis. The presence of multiple halogen atoms (bromine and chlorine) and a phenolic hydroxyl group makes it a valuable intermediate for further functionalization. It is commonly used in cross-coupling reactions (e.g., Suzuki, Buchwald-Hartwig) to introduce the substituted phenol moiety into more complex molecules. It also serves as a precursor for the synthesis of other fine chemicals, agrochemicals, and pharmaceuticals. The compound can act as a halogenating agent or a source of the halogenated aryl group in various synthetic transformations. As a halogenated compound, it requires careful handling. Standard safety precautions for handling phenols and halogenated aromatics should be observed, including the use of appropriate personal protective equipment (PPE) and adequate ventilation due to potential toxicity and irritancy.