Clinical data
Routes of
ATC code none
Legal status
Legal status
  • ℞ (Prescription only)
CAS Number 15687-18-0
PubChem (CID) 85896
ChemSpider 77482
UNII BLO7300903 YesY
Chemical and physical data
Formula C12H17ClO2
Molar mass 228.72 g/mol

Fenpentadiol (INN) (brand names Tredum, Trefenum; developmental code name Rd-292), also known as phenpentanediol, is a drug described as a tranquilizer and antidepressant that was formerly marketed in Europe.[1][2] It also has stimulant, sedative, and anxiolytic effects, with the latter two occurring only at higher doses.[3][4]

The following literature incidence of the fenpentadiol has been found and quoted:

In three articles the properties of a new psychotropic agent from the series of araliphatic alcohols — phenpentanediol (CXV) — were described (477-479). It is not easy to place this substance anywhere in the pharmacodynamic system of psychotropic agents: on the one hand it potentiates the barbiturate narcosis, on the other it increases motility and exploratory activity in mice and potentiates the effects of amphetamine.
Farmaco. Edizione Scientifica. 1974. p. 90. 


  1. J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 258–. ISBN 978-1-4757-2085-3.
  2. O'Neil, Maryadele J. (2001). The Merck index: an encyclopedia of chemicals, drugs, and biologicals. Rahway, NJ: Merck Research Laboratories. ISBN 0-911910-13-1.
  3. Ginet J, Levy JC, Rolland D (January 1971). "[Psychotropic activity under the influence of fenpentadiol]". Arzneimittel-Forschung (in German). 21 (1): 1–8. PMID 4396676.
  4. Heinzelman, Richard Voorhees (1972). Cornelius K. Cain, ed. Academic Press. p. 316. ISBN 0-12-040507-5 https://books.google.com/books?id=52joNWUvZakC&lpg=PA11&as_brr=3&pg=PA11#v=onepage. Missing or empty |title= (help)

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