(2-Ethynylphenyl)methanamine hydrochloride is primarily used in organic synthesis and pharmaceutical research. It serves as a key intermediate in the development of various bioactive compounds, particularly in the synthesis of molecules with potential therapeutic applications. The ethynyl group in the compound makes it a valuable building block for click chemistry, enabling the formation of complex structures through reactions like the copper-catalyzed azide-alkyne cycloaddition (CuAAC). This property is exploited in drug discovery and the development of targeted drug delivery systems. Additionally, it may be utilized in the preparation of ligands for catalysis or as a precursor in the synthesis of novel materials with specific electronic or optical properties. Its applications are largely focused on research and development in medicinal chemistry and material science.