NS-2710 (LS-193,970) is an anxiolytic drug with a novel chemical structure, developed by the small pharmaceutical company NeuroSearch. It has similar effects to benzodiazepine drugs, but is structurally distinct and so is classed as a nonbenzodiazepine anxiolytic. NS-2710 is a potent but non-selective partial agonist at GABA<sub>A</sub> receptors, although with little efficacy at the ñ1 subtype and more at ñ2 and ñ3. It has anxiolytic effects comparable to chlordiazepoxide, and while it is a less potent anticonvulsant than the related drug NS-2664, it has a much longer duration of action, and similarly to other ñ2/ñ3-preferring partial agonists produces little sedative effects or physical dependence.