Used in neuroscience research to precisely control neuronal activity with light. Acts as a caged compound that releases GABA, the primary inhibitory neurotransmitter, upon exposure to specific wavelengths of light. Enables spatial and temporal control of GABAergic signaling in brain tissue, allowing scientists to study synaptic function, neural circuits, and network dynamics in real time. Particularly useful in optopharmacology experiments where light-triggered inhibition helps dissect the role of specific neurons in behavior and disease models.