Last updated
FGIN-143 structure.png
  • 2-[2-(4-chlorophenyl)-5-chloro-1H-indol-3-yl]-N,N-dihexylacetamide
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Formula C28H36Cl2N2O
Molar mass 487.51 g·mol−1
3D model (JSmol)
  • c3cc(Cl)ccc3-c2[nH]c1ccc(Cl)cc1c2CC(=O)N(CCCCCC)CCCCCC
  • InChI=1S/C28H36Cl2N2O/c1-3-5-7-9-17-32(18-10-8-6-4-2)27(33)20-25-24-19-23(30)15-16-26(24)31-28(25)21-11-13-22(29)14-12-21/h11-16,19,31H,3-10,17-18,20H2,1-2H3

FGIN-1-43 is an anxiolytic drug which acts as a selective agonist at the peripheral benzodiazepine receptor, also known as the mitochondrial 18 kDa translocator protein or TSPO. It is thought to produce anxiolytic effects by stimulating steroidogenesis of neuroactive steroids such as allopregnanolone, and is several times more potent than the related drug FGIN-127. [1] [2] [3] [4]

Related Research Articles

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<span class="mw-page-title-main">Bretazenil</span> Chemical compound

Bretazenil (Ro16-6028) is an imidazopyrrolobenzodiazepine anxiolytic drug which is derived from the benzodiazepine family, and was invented in 1988. It is most closely related in structure to the GABA antagonist flumazenil, although its effects are somewhat different. It is classified as a high-potency benzodiazepine due to its high affinity binding to benzodiazepine binding sites where it acts as a partial agonist. Its profile as a partial agonist and preclinical trial data suggests that it may have a reduced adverse effect profile. In particular bretazenil has been proposed to cause a less strong development of tolerance and withdrawal syndrome. Bretazenil differs from traditional 1,4-benzodiazepines by being a partial agonist and because it binds to α1, α2, α3, α4, α5 and α6 subunit containing GABAA receptor benzodiazepine receptor complexes. 1,4-benzodiazepines bind only to α1, α2, α3 and α5GABAA benzodiazepine receptor complexes.

<span class="mw-page-title-main">Fenobam</span> Chemical compound

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<span class="mw-page-title-main">Emapunil</span> Chemical compound

Emapunil is an anxiolytic drug which acts as a selective agonist at the peripheral benzodiazepine receptor, also known as the mitochondrial 18 kDa translocator protein or TSPO. This protein has multiple functions, among which is regulation of steroidogenesis, particularly the production of neuroactive steroids such as allopregnanolone in the brain. In both animal and human trials, emapunil produced fast acting anxiolytic and anti-panic effects, without producing sedation or withdrawal symptoms following cessation of use. Emapunil is also used in its 11C radiolabelled form to map the distribution of TSPO receptors in the brain.

<span class="mw-page-title-main">FGIN-127</span> Chemical compound

FGIN-1-27 is an anxiolytic drug which acts as a selective agonist at the peripheral benzodiazepine receptor, also known as the mitochondrial 18 kDa translocator protein or TSPO. It is thought to produce anxiolytic effects by stimulating steroidogenesis of neuroactive steroids such as allopregnanolone.

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<span class="mw-page-title-main">Adatanserin</span> Chemical compound

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<span class="mw-page-title-main">Vassilios Papadopoulos</span>

Vassilios Papadopoulos, DPharm, PhD, DSc (hon), born February 18, 1961, in Athens, Greece, is a scholar, researcher, inventor, professor, and university administrator who has served as dean of the USC Alfred E. Mann School of Pharmacy and Pharmaceutical Sciences at the University of Southern California in Los Angeles, California since 2016. Previously, he was the associate vice president and director of the Biomedical Graduate Research Organization at Georgetown University from 2005 to 2007, and the executive director and chief scientific officer of the Research Institute of the McGill University Health Center from 2007 to 2015.


  1. Romeo E, Auta J, Kozikowski AP, Ma D, Papadopoulos V, Puia G, et al. (September 1992). "2-Aryl-3-indoleacetamides (FGIN-1): a new class of potent and specific ligands for the mitochondrial DBI receptor (MDR)". The Journal of Pharmacology and Experimental Therapeutics. 262 (3): 971–8. PMID   1326631.
  2. Kozikowski AP, Ma D, Brewer J, Sun S, Costa E, Romeo E, Guidotti A (October 1993). "Chemistry, binding affinities, and behavioral properties of a new class of "antineophobic" mitochondrial DBI receptor complex (mDRC) ligands". Journal of Medicinal Chemistry. 36 (20): 2908–20. doi:10.1021/jm00072a010. PMID   8411007.
  3. Costa E, Auta J, Guidotti A, Korneyev A, Romeo E (June 1994). "The pharmacology of neurosteroidogenesis". The Journal of Steroid Biochemistry and Molecular Biology. 49 (4–6): 385–9. doi:10.1016/0960-0760(94)90284-4. PMID   8043504. S2CID   33492066.
  4. Guillon J, Boulouard M, Lelong V, Dallemagne P, Rault S, Jarry C (November 2001). "Synthesis and preliminary behavioural evaluation in mice of new 3-aryl-3-pyrrol-1-ylpropanamides, analogues of FGIN-1-27 and FGIN-1-43". The Journal of Pharmacy and Pharmacology. 53 (11): 1561–8. doi:10.1211/0022357011777945. PMID   11732760. S2CID   11838769.