FHATHBIN (5-hydroxy-11-aminotetrahydrobenzindole)

FHATHBIN (5-hydroxy-11-aminotetrahydrobenzindole)

FHATHBIN, also known as 5-hydroxy-11-aminotetrahydrobenzindole or as 4,α-methylene-5-HT, is a serotonin receptor agonist of the partial ergoline group.^[1][2][3] It is a cyclized tryptamine and tricyclic derivative of serotonin (5-hydroxytryptamine) as well as a simplified analogue of LSD.^[1][2][3] The drug is known to act on the serotonin 5-HT_1A receptor.^[1] FHATHBIN was first reported in the scientific literature by 1984.^[2][1]