4,4,4-Trifluoro-1-(2-furyl)-1,3-butanedione (furoyltrifluoroacetone, FTFA) is a β-diketone. Its cytotoxic activity against human cultured tumor and normal cells has been evaluated. Reports suggest that 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione partially inhibits the oxidation of ferrocyanide in ETP (electron transport particles) isolated from beef heart mitochondria. Its reaction with N,N,N′,N′-tetramethylalkyl diamines to form ionic adducts has been investigated. The conformational analysis of the enol and keto form of FTFA has been reported.