Used primarily as a pharmaceutical intermediate in the synthesis of active drug substances, particularly in the development of central nervous system agents and antipsychotic medications. Its structure serves as a building block for compounds exhibiting dopamine or serotonin receptor activity. Also utilized in research settings for creating novel thiophene-based derivatives with potential biological activity. The hydrochloride salt form improves stability and solubility, making it suitable for use in polar reaction environments and purification processes.