4-Fluoro-2,5-dimethoxybenzeneethanamine-D6 hydrochloride is a labelled analogue of 4-Fluoro-2,5-dimethoxybenzeneethanamine hydrochloride. 4-Fluoro-2,5-dimethoxybenzeneethanamine hydrochloride is a psychoactive compound that has antagonist acitvity towards the 5-hydroxytryptamine 2A receptor, a protein complex that is found in the central and peripheral nervous system.