Ciclafrine (; developmental code names Go 3026A, W-43026A) is a sympathomimetic and antihypotensive agent of the phenethylamine family that was never marketed.

Chemistry Ciclafrine is a substituted phenethylamine and belongs to the class of hemiaminal ethers.

Synthesis Ciclafrine can be prepared by the reaction of norfenefrine with cycloheptanone.

See also Berefrine

References