C2H4Cl2\mathrm{C}_{2} \mathrm{H}_{4} \mathrm{Cl}_{2}C2H4Cl2
C2H5Cl\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{Cl}C2H5Cl
C2H2Cl2\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Cl}_{2}C2H2Cl2
C2H3Cl\mathrm{C}_{2} \mathrm{H}_{3} \mathrm{Cl}C2H3Cl