1,2,4-TRICHLORO-2-BUTENE 1,2,4-Trichlorobut-2-ene 1,2,4-Trichlorobutene-2 2-Butene, 1,2,4-trichloro- 2431-54-1 3-01-00-00744 (Beilstein Handbook Reference) BRN 1740301 EINECS 219-398-4