pyrovalerone/paɪ.roʊˈvæl.ɚ.roʊn/EtymologyFrom pyr(r)o(lidine) + valer(o) + (phen)one.nounA psychoactive drug, (RS)-1-(4-methylphenyl)-2-(1-pyrrolidinyl)pentan-1-one, used to treat chronic fatigue and as an anorectic. It belongs to the family of substituted cathinones.