Article · Wikipedia archive · Last revised Jun 29, 2026

Cepentil

Cepentil, or Tsepentil, also known as N-cyclopentyllysergamide (NCPe-LA) or as lysergic acid cyclopentylamide (LCyP), is an analogue of LSD developed in the former Soviet Union which acts as an antagonist at serotonin receptors. It does not produce hallucinogen-like effects in animal studies, instead being described as an "energizer" by contemporary sources, suggesting an action similar to the antidementia drug hydergine, however the pharmacology of cepentil has not been studied with modern techniques.

Last revised
Jun 29, 2026
Read time
≈ 1 min
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208 w
Citations
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Source
Wikipedia ↗
Cepentil
Clinical data
Other namesTsepentil; N-Cyclopentyllysergamide; NCPe-LA; N-Cyclopentyl-lysergamide; LCyP; C5AL
Identifiers
  • N-cyclopentyl-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide
PubChem CID
ChemSpider
Chemical and physical data
FormulaC21H25N3O
Molar mass335.451 g·mol−1
3D model (JSmol)
  • CN1CC(C=C2C1CC3=CNC4=CC=CC2=C34)C(=O)NC5CCCC5
  • InChI=1S/C21H25N3O/c1-24-12-14(21(25)23-15-5-2-3-6-15)9-17-16-7-4-8-18-20(16)13(11-22-18)10-19(17)24/h4,7-9,11,14-15,19,22H,2-3,5-6,10,12H2,1H3,(H,23,25)
  • Key:GIUWLXABHBAKDK-UHFFFAOYSA-N

Cepentil, or Tsepentil, also known as N-cyclopentyllysergamide (NCPe-LA) or as lysergic acid cyclopentylamide (LCyP), is an analogue of LSD developed in the former Soviet Union which acts as an antagonist at serotonin receptors. It does not produce hallucinogen-like effects in animal studies, instead being described as an "energizer" by contemporary sources, suggesting an action similar to the antidementia drug hydergine, however the pharmacology of cepentil has not been studied with modern techniques.1234

See also

See also

References

References

  1. Votava Z, Podvalova I, Semonsky M (May 1958). "Studies on the pharmacology of D-lysergic acid cycloalkylamides". Archives Internationales de Pharmacodynamie et de Therapie. 115 (1–2): 114–30. PMID 13545891.
  2. Zakusov VV (January 1964). "Pharmacology and chemistry". Vestnik Akademii Meditsinskikh Nauk SSSR (in Russian). 19: 43–51. PMID 14203697.
  3. Usdin E, Efron DH (1972). Psychotropic Drugs and Related Compounds. National Institute of Mental Health. pp. 94–95. ASIN B002X3CDIY.
  4. Sankar DV (1975). LSD - A Total Study. PJD Publications. pp. 150–152. ISBN 0-9600290-3-6.
External links