Used primarily in research settings as a potent and selective antagonist of the neurokinin-3 (NK3) receptor. It is employed to study the role of tachykinin signaling in neurological and psychiatric disorders, including schizophrenia, depression, and menopausal hot flashes. Due to its high selectivity and blood-brain barrier permeability, it is valuable in preclinical models for evaluating the therapeutic potential of NK3 receptor modulation. It is not used clinically but serves as a critical tool compound in neuroscience and pharmacology research.