Used primarily in scientific research to study sigma receptors, particularly the sigma-1 receptor subtype. It acts as a selective antagonist, helping researchers understand the role of these receptors in neurological functions and disorders. Investigated for potential applications in treating conditions such as neuropathic pain, depression, and substance abuse due to its modulatory effects on neurotransmitter systems. Also employed as a pharmacological tool to block sigma receptor activity in cellular and animal models, aiding in the development of new central nervous system therapeutics.