1,2-DIBROMO-4,5-(METHYLENEDIOXY)BENZENE

1,2-DICHLOROHEXAFLUOROCYCLOPENTENE

1,2-DICHLOROHEXAFLUOROCYCLOBUTANE

1,2-DIHYDRO-5-(3-PYRIDINYL)-3H-1,2,4-TRIAZOLE-3-THIONE

1,2-DIIODOTETRAFLUOROETHANE

1,2-DIMETHYL-1,1,2,2-TETRAPHENYLDISILANE