2,3,6,7-TETRAMETHYLQUINOXALINE

2',3',6'-TRIFLUOROACETOPHENONE

trans-2,3-Dibromo-2-butene-1,4-diol

2,3-Dibromopropionitrile

2,3-Dichloro-5-(trifluoromethyl)pyridine

2,3-DICHLORO-6,7-DIMETHYLQUINOXALINE