Used as an intermediate in the synthesis of pharmaceuticals, particularly in the production of beta-adrenergic receptor blockers and other cardiovascular drugs. It serves as a building block for introducing nitrile and bromomethyl functional groups into more complex molecules. Commonly employed in organic synthesis for creating substituted phenylacetonitrile derivatives. Its reactivity allows for easy alkylation and nucleophilic substitution, making it valuable in the development of active pharmaceutical ingredients (APIs). Also utilized in the preparation of agrochemicals and specialty chemicals requiring aromatic nitrile structures.