1,2-苯二胺

bromo-2 (methyl-1' oxo-2' quinoxalinyl-3')-2 acetate d'ethyle

2-ethoxycarbonylmethylene-4-methyl-3-oxo-1,2,3,4-tetrahydroquinoxaline

2-羟基喹喔啉

1-methylquinoxalin-2-one