1-Bromo-4-chlorobutane is a halogenated organic compound consisting of a four-carbon alkane chain with both bromine (-Br) and chlorine (-Cl) atoms at opposite ends. It serves as an important intermediate in organic synthesis, particularly in the production of pharmaceuticals, agrochemicals, and specialty chemicals. Due to its bifunctional halide groups, it is highly reactive and commonly used in nucleophilic substitution and coupling reactions.