... called C6-fluoroketone; it is also known as dodecafluoro-2-methylpentane-3-one; its ASHRAE nomenclature is FK 5- ... the systematic name 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and the structural formula CF3CF2C(=O) ... CF(CF3)2, a fully fluorinated analog of ethyl isopropyl ketone. Perfluoro(2-methyl-3-pentanone ...