fenpentadiol fenpentadiol 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. it also has stimulant, sedative, and anxiolytic effects, with the latter two occurring only at higher doses. fenpentadiolclinical dataroutes ofadministrationoralatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 2-(4-chlorophenyl)-4-methyl-pentane-2,4-diol cas number15687-18-0pubchem cid85896chemspider77482uniiblo7300903chemblchembl2106273comptox dashboard (epa)dtxsid9023047 echa infocard100.036.150 chemical and physical dataformulac12h17clo2molar mass228.72 g·mol−1 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.