Clinical data
Routes of
ATC code
  • none
Pharmacokinetic data
CAS Number
PubChem CID
CompTox Dashboard (EPA)
Chemical and physical data
Molar mass309.36236 g/mol g·mol−1
3D model (JSmol)
 ☒N☑Y (what is this?)  (verify)

CGS-20625 is an anxiolytic drug used in scientific research. It has similar effects to benzodiazepine drugs,[1] but is structurally distinct and so is classed as a nonbenzodiazepine anxiolytic.[2][3] It produces anxiolytic and anticonvulsant effects, but with no sedative effects even at high doses, and no significant muscle relaxant effects.[4] It is orally active in humans, but with relatively low bioavailability.[5]

CGS-20625 is a positive allosteric modulator at several GABAA receptors types. Due to its alicyclic moiety potency at γ1 subunit containing receptor types is more pronounced for CGS-20625 compared to benzodiazepines.[1] γ1 subunits are expressed at higher levels in the central amygdala.[6]


  1. ^ a b Khom S, Baburin I, Timin EN, Hohaus A, Sieghart W, Hering S (Feb 2006). "Pharmacological properties of GABAA receptors containing gamma1 subunits". Mol. Pharmacol. 69 (2): 640–9. doi:10.1124/mol.105.017236. PMID 16272224. S2CID 15082432.
  2. ^ Bennett DA (1987). "Pharmacology of the pyrazolo-type compounds: agonist, antagonist and inverse agonist actions". Physiol. Behav. 41 (3): 241–5. doi:10.1016/0031-9384(87)90360-X. PMID 2893398.
  3. ^ Brunner LA, Luders RC (Aug 1991). "Determination of a potential anxiolytic drug (CGS 20625) in human plasma by high-performance liquid chromatography". J. Chromatogr. 568 (2): 487–93. doi:10.1016/0378-4347(91)80188-I. PMID 1686029.
  4. ^ Williams M, Bennett DA, Loo PS, et al. (Jan 1989). "CGS 20625, a novel pyrazolopyridine anxiolytic". J Pharmacol Exp Ther. 248 (1): 89–96. PMID 2563294.
  5. ^ Hirschberg Y, Oberle RL, Ortiz M, Lau H, Markowska M (Feb 1995). "Oral absorption of CGS-20625, an insoluble drug, in dogs and man". J Pharmacokinet Biopharm. 23 (1): 11–23. doi:10.1007/BF02353783. PMID 8576841.
  6. ^ Esmaeili A, Lynch JW, Sah P (January 2009). "GABAA receptors containing gamma1 subunits contribute to inhibitory transmission in the central amygdala". J. Neurophysiol. 101 (1): 341–9. doi:10.1152/jn.90991.2008. PMID 19004994. S2CID 1590604.