Norfenfluramine Explained

Watchedfields:changed
Verifiedrevid:422837453
Cas Number:19036-73-8
Pubchem:15897
Iuphar Ligand:215
Chemspiderid:15108
Unii:CLX07A6ZIY
Chebi:125411
Chembl:1979333
Synonyms:3-Trifluoromethylamphetamine; 3-TFMA; Desethylfenfluramine; JP-92
Iupac Name:1-[3-(trifluoromethyl)phenyl]propan-2-amine
C:10
H:12
F:3
N:1
Smiles:FC(F)(F)c1cccc(c1)CC(N)C
Stdinchi:1S/C10H12F3N/c1-7(14)5-8-3-2-4-9(6-8)10(11,12)13/h2-4,6-7H,5,14H2,1H3
Stdinchikey:MLBHFBKZUPLWBD-UHFFFAOYSA-N

Norfenfluramine, or 3-trifluoromethylamphetamine, is a never-marketed drug of the amphetamine family that behaves as a serotonin and norepinephrine releasing agent and potent 5-HT2A, 5-HT2B, and 5-HT2C agonist. The action of norfenfluramine on 5-HT2B receptors on heart valves leads to a characteristic pattern of heart failure following proliferation of cardiac fibroblasts on the tricuspid valve, known as cardiac fibrosis.[1] This side effect led to the withdrawal of fenfluramine as an anorectic agent worldwide, and to the withdrawal of benfluorex in Europe,[2] as both fenfluramine and benfluorex form norfenfluramine as an active metabolite. It is a human TAAR1 agonist.[3]

In spite of acting as a serotonin 5-HT2A receptor agonist, norfenfluramine is described as non-hallucinogenic.[4] However, hallucinations have occasionally been reported with large doses of fenfluramine, which itself is a much weaker serotonin 5-HT2A receptor agonist than norfenfluramine but produces norfenfluramine as a major active metabolite.

See also

Notes and References

  1. Setola V, Dukat M, Glennon RA, Roth BL . Molecular determinants for the interaction of the valvulopathic anorexigen norfenfluramine with the 5-HT2B receptor . Molecular Pharmacology . 68 . 1 . 20–33 . July 2005 . 15831837 . 10.1124/mol.104.009266 . 30906680 .
  2. Web site: European Medicines Agency recommends withdrawal of benfluorex from the market in European Union . European Medicines Agency . 2009-12-18 . dead . https://web.archive.org/web/20091222213737/http://www.emea.europa.eu/pdfs/human/referral/benfluorex/Benfluorex_81503309en.pdf . 2009-12-22 .
  3. Lewin AH, Miller GM, Gilmour B . Trace amine-associated receptor 1 is a stereoselective binding site for compounds in the amphetamine class . Bioorganic & Medicinal Chemistry . 19 . 23 . 7044–7048 . December 2011 . 22037049 . 3236098 . 10.1016/j.bmc.2011.10.007 .
  4. Gumpper RH, Roth BL . Psychedelics: preclinical insights provide directions for future research . Neuropsychopharmacology . 49 . 1 . 119–127 . January 2024 . 36932180 . 10.1038/s41386-023-01567-7 .