1-Phenethylpiperazine 2HCl is primarily utilized in research settings as a reference standard or analytical reagent for studying its pharmacological properties. It has been explored for its potential interactions with neurotransmitter systems, particularly in the context of serotonin and dopamine receptors, making it relevant in neuroscience and psychopharmacology studies. The compound is also used in the synthesis of more complex molecules, serving as a building block in organic chemistry. Its applications are largely confined to laboratory environments, where it aids in understanding biochemical pathways and developing new therapeutic agents.