Used in research settings as a selective antagonist for the NMDA receptor, particularly targeting the glycine site. This compound helps in studying excitatory neurotransmission and has been utilized in neuroscience to explore mechanisms related to synaptic plasticity, learning, and memory. Due to its specificity, it serves as a tool compound in experiments investigating neurodegenerative diseases, stroke, and psychiatric disorders involving glutamate dysregulation. Not intended for therapeutic use.