DL-Homocysteic Acid is primarily used in neuroscience research as a potent agonist for glutamate receptors, particularly NMDA receptors. It is employed to study excitatory neurotransmission and synaptic plasticity in the brain. Researchers utilize it to simulate excitotoxicity, a process linked to neurodegenerative diseases like Alzheimer's and Parkinson's, to better understand cellular damage mechanisms. Additionally, it serves as a tool in electrophysiological studies to investigate the role of glutamate in neuronal signaling and brain function. Its application extends to exploring potential therapeutic targets for conditions involving glutamate dysregulation.