Isamoltane
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Isamoltane (developmental code name CGP-361A) is a beta blocker (β-adrenergic receptor antagonist) with additional serotonin 5-HT1A and 5-HT1B receptor antagonist activity. It has about 5-fold higher affinity for the serotonin 5-HT1B receptor (Ki = 21nM) over the serotonin 5-HT1A receptor (Ki = 112nM). It has anxiolytic effects in rodents. The drug was under development by Novartis and AstraZeneca for the treatment of anxiety disorders in the 1990s but was never marketed.