P-bromophenylacetonitrile is a nitrile compound. Nitrile compounds are a class of organic compounds containing cyanide groups (- CN) and are important intermediates in organic synthesis. Due to the high reactivity of cyanide groups, corresponding amine compounds can be obtained through hydrogenation reactions. They are important raw materials for manufacturing pharmaceuticals, pesticides, dyes, fragrances, surfactants, etc., and are widely used in various fields of the national economy.