Anxiolytic drug, Gedocarnil [SH 530, ZK 113315], was undergoing phase I clinical trials with Schering AG in Germany as a potential nootropic agent. However it`s development for the treatment of cognition disorders was discontinued.

Pinazepam, a benzodiazepine derivative, differs from other drugs of its class by the presence of an unsaturated bond, the propargyl group, at the N-1 position. In animals, pinazepam controls anxiety and aggressiveness and exerts anticonvulsant activity. In clinical trials with open or controlled design, pinazepam, compared with diazepam, showed significant and purely anxiolytic action in patients suffering from anxiety with or without somatic manifestations, particularly in gastrointestinal disorders. Even though it is not a specific hypnotic drug, it seems to help patients in whom the physiological course of the sleep is disturbed. Pinazepam is used in the treatment of anxiety and insomnia associated with anxiety.

KETAZOLAM, a benzodiazepine with an additional d-face-fused heterocyclic ring, possesses anxiolytic, anticonvulsant, sedative and skeletal muscle relaxant properties. It is used for the treatment of anxiety and spasticity.

Bromazepam (marketed under several brand names, including Lectopam, Lexotan, Lexilium, Lexaurin, Brazepam, Rekotnil, and Lexotanil)[1] is a benzodiazepine derivative drug, patented by Roche in 1963 and developed clinically in the 1970s. It is mainly an anti-anxiety agent with similar side effects to diazepam (Valium). In addition to being used to treat anxiety or panic states, bromazepam may be used as a premedicant prior to minor surgery. Bromazepam typically comes in doses of 3 mg and 6 mg tablets.[5] Bromazepam is contraindicated and should be used with caution in women who are pregnant, the elderly, patients with a history of alcohol or other substance abuse disorders and children. Prolonged use of bromazepam causes tolerance and may lead to both physical and psychological dependence on the drug, and as a result, it is a medication which is controlled by international law. Bromazepam binds to the GABA receptor GABAA, causing a conformational change and increasing the inhibitory effects of GABA. Bromazepam is a long-acting benzodiazepine and is lipophilic and metabolized hepatically via oxidative pathways.

Clorazepate is a water-soluble benzodiazepine derivative effective in the treatment of anxiety. It has also muscle relaxant and anticonvulsant actions. Studies in healthy men have shown that clorazepate dipotassium has depressant effects on the central nervous system. clorazepate is a prodrug since orally administered it is rapidly decarboxylated to form nordiazepam, there is essentially no circulating parent drug. Nordiazepam positively modulates GABAA receptors to produce anxiolytic and anticonvulsant effects.