5-Fluoro-N,N-dimethyltryptamine (5-fluoro-DMT) is a tryptamine derivative related to compounds such as 5-bromo-DMT and 5-MeO-DMT. Fluorination of psychedelic tryptamines either reduces or has little effect on 5-HT2A/C receptor affinity or intrinsic activity, although 6-fluoro-DET is inactive as a psychedelic despite acting as a 5-HT2A agonist (cf. lisuride), while 4-fluoro-5-methoxy-DMT is a much stronger agonist at 5-HT1A than 5-HT2A.
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^Rabin, RA; Regina, M; Doat, M; Winter, JC (2002). "5-HT2A receptor-stimulated phosphoinositide hydrolysis in the stimulus effects of hallucinogens". Pharmacology, Biochemistry, and Behavior. 72 (1–2): 29–37. doi:10.1016/S0091-3057(01)00720-1. PMID11900766.