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ipsapirone

n. An azapirone with anxiolytic and antidepressant properties.

Wikipedia
Ipsapirone

Ipsapirone is a selective 5-HT receptor partial agonist of the piperazine and azapirone chemical classes. It has antidepressant and anxiolytic effects. Ipsapirone was studied in several placebo-controlled trials for depression and continues to be used in research.