Used as a potent and selective negative allosteric modulator of the SK (small conductance calcium-activated potassium) channels, particularly SK3. It is primarily employed in neuroscience research to study neuronal excitability and synaptic transmission. Its ability to modulate afterhyperpolarization currents makes it a valuable tool for investigating conditions such as epilepsy, Parkinson’s disease, and other disorders involving abnormal neuronal firing patterns. Additionally, NS8593 hydrochloride has been explored for its potential to enhance cognitive functions in preclinical models by improving synaptic plasticity and information processing in the central nervous system.