Clinical data
ATC code none
Legal status
Legal status
  • UN: Unscheduled
PubChem (CID) 126769
Chemical and physical data
Formula C15H14N4O
Molar mass 302.76 g/mol

SB-200646 is a 5-HT2 receptor antagonist with anxiolytic properties in rats. It was the first 5-HT2 antagonist discovered to have selectivity of 5-HT2C/2B over 5-HT2A.[1]


  1. In vivo properties of SB 200646A, a 5-HT2C/2B receptor antagonist, British Journal of Pharmacology, 1994, PMID 7912626
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