Tetrachloroethylene127-18-4100 % similar Hexachlorobutadiene87-68-350 % similar 1,1,2,3-Tetrachloro-1-propene10436-39-233 % similar Hexachloropropene1888-71-733 % similar 1,1,2,2-Tetrachloroethane-D233685-54-033 % similar Deuterated chloroform865-49-633 % similar 1,1,2-Trichloro-3,3,3-trifluoro-1-propene431-52-731 % similar